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Bresaola

April 1, 2014 by AOG Leave a Comment

After months of planning, we were finally ready to make our bresaola. There are 5 different stages to curing whole muscle meats like bresaola; curing, casing, fermentation, drying, and of course, tasting.  We created a basic timeline for our meat to insure that we would be ready and available to do all the necessary steps at the proper time. So much about curing meat is experience and feel, so as beginners, we did our best to prepare as thoroughly as possible and read up on the process from people who had already done it and chronicled their process.


 

Total Time: 5 weeks total (approximately)

2 weeks: Curing

48 hours: Fermentation

3+ weeks: Drying

We started the curing process on a Friday, so that in two weeks, when we started the fermentation process,  we could watch over the conditions to make sure the temperature and humidity stayed constant. We let the fermentation process run its course over the weekend, and then began the drying process the following Monday and let the meat dry for 3 weeks (until it lost about 30-40% of its weight).


Curing (2 weeks):

We collected all the materials we needed for the cure and based on a combination of ratios we found (see sources), and we created a spreadsheet letting us know how much of each ingredient to add (based off the mass of the meat itself).

*It should be noted that I have since updated the percentages of salt (2.75%) and cure #2 (0.25%) that I use, and suggest referring to my more recent posts for this information.

On the day we started curing the meat, we left our scale behind, so we only were able to do a rough approximation of the spice cure. In the future, we plan on experimenting with other ingredients and based on the results, changing our initial ratios. Some of the ingredients we plan on adding include cinnamon, bay leaves, coffee and white wine.

In order to make the spice cure, we ground the spices that we didn’t buy pre-ground, and added them all together. We gently rubbed the spices into the meat, and then vacuumed sealed it shut.

We allowed the curing process to go on for about two weeks, leaving the meat in the refrigerator, occasionally flipping it over and gently rubbing the spices in.


 

Casing (1 hour):

We removed the meat from the vacuumed sealed bag with the spice cure, and rinsed it in cold water while wiping off what remained of the spice cure.

We bought 100 mm collagen casings to stuff the meat into when we hung it, which we soaked in cold water for a few minutes before we attempted stuffing the meat into it. This was a little tight, which was good, but made it moderately difficult to do.

After we stuffed the meat into the collagen casing, we used butcher knots to string up the meat in the casing, and then used a toothpick to poke any air holes and squeeze out any air that remained in the casing.

We then sprayed the meat with the M-EK-4 solution until it was heavily dripping with the mold solution.


 

Fermentation (48 hours):

Temperature: 69F/20C

Humidity: 80-90% RH

*I have recently stopped using a fermentation stage for whole muscle cures. Refer to my more recent posts for more information on this topic.

After casing, the meat was ready for the fermentation process. The fermentation process is useful to induce the growth of beneficial bacteria and molds. The ideal temperature varies based on the culture that is used. While historically, the caves or rooms that were used to cure meat would already be flush with beneficial molds which would then “jump” onto the sausages and hanging meats, today, the individual with a personal curing chamber has to rely on more direct measures. We ordered a single strain culture of Penicillium nalgiovense, commercially referred to as Bactoferm M-EK-4. We created a 0.5% solution of the fungus, adding 2.0 g of the M-EK-4 to 400g of water. The ideal temperature for this strain is around 69F/20C, so we set the temperature controller in the curing chamber turned fermentation chamber to around 69F/20C. Luckily enough, this was around room temperature anyway, so basically the fridge was off for the entire fermentation stage. On the other hand, high humidity is a necessary in order to have mold growth, as well as to keep the meat from drying out during this process. We aimed for 80-90% RH for this process, and kept an eye on humidity over the weekend.

We hung the meat that had been inoculated with the “good mold” Penicillium nalgiovense in the “fermentation chamber” (i.e. the curing chamber at higher temperature and higher humidity). We hung the meat on S hooks, using the string that we tied the meat up with, and let it stay in the chamber for about 48 hours.

After 48 hours we attempted to check the pH (since it should have been lowered to below 5.1), but since we didn’t have a pH meter and had to rely on pH strips all we knew was that it did indeed become more acidic than a pH of 5, so we moved ahead to the next step, drying.

We didn’t see much mold growth at first, so we were concerned that it wouldn’t grow, but we decided to spray it again and move on with the drying stage, since beneficial mold growth is not a requirement for the bresaola to achieve the required end product.


 

Drying (3 weeks+):

After the fermentation process was complete, we moved on to the drying process. We changed the refrigerator set point to 54F/12C and the humidity set point to 70% RH. We let the meat hang for about 3 weeks, keeping an eye on the temperature and humidity and watching for mold growth.

Over time, we ended up having a decent mold bloom, of mostly white smooth mold with some green mold spots. Because we were uncertain of what the green mold was, we used white vinegar to clean off the mold bloom.

After 3 weeks, we measured the weight of the meat in order to see if it had lost 30-40% of its weight. It weighed in at 1016g, down from 1551g, or about 35% of its weight. It felt hard to the touch, like any store bought bresaola, so we took a leap of faith and went ahead with the tasting.


 

Tasting:

We cleaned the outside of the bresaola with white vinegar and water, and removed the  butcher string and the collagen casing. Using a commercial deli slicer, we were able to slice the bresaola as finely as it deserved. After checking for any signs that something went amiss, such as case hardening, or a rancid soft inside with a bad smell, and finding none, we went ahead.

Wow. I had never tasted such a succulent piece of cured meat. This solidified in my mind that curing your own meat is the way to go. We prepared it as simply as possible, tasting it directly off the slicer at first, and later with some olive oil, pepper, and lemon juice.

In the days following, we couldn’t get enough of the delicious bresaola that we had created, and  ate it any way possible. From sandwiches to cheese plates, a little bresaola never goes amiss.  One of my favorite ways to enjoy the bresaola is in a cheese and meat plate with taleggio, an earthy Italian cheese that best pairs with bresaola.

Our experiment was a success! And with the bresaola finished, we are currently looking forward to our next batch of cured meats.


Resources:

http://curedmeats.blogspot.mx/2007/11/bresaola.html

Charcuterie: The Craft of Salting, Smoking, and Curing (November 2005) by Michael Ruhlman, Brian Polcyn


 

Disclaimer: Meat curing is a hobby that comes with inherent risks. We can all do things to limit this risk by educating ourselves about the process and the utilizing the safest known methods to create our products. This website is for educational purposes only, and all experimentation should be done at each individuals own risk.

Filed Under: Charcuterie Tagged With: bresaola, charcuterie, cured meat, diy

Curing Chamber: Construction

April 1, 2014 by AOG 8 Comments

Construction day was finally upon us! After months of dreaming and planning and buying parts online, we were finally ready.


Step 1 (Air circulation):

Air circulation is vital for curing meats, so we decided to insert a computer fan into the top of the refrigerator door and a hole at the bottom, in order to generate air flow in the chamber. We removed the door of the refrigerator in order to better access what we needed. We measured the area that we needed to cut in order to saw the holes.

The hole at the top was cut for the size of the computer fan, and was square.

The hole at the bottom was circular, in order to insert a piece of PVC pipe into the air outflow hole.

After these holes were cut, the computer fan was inserted into the top square hole and the PVC pipe was inserted into the bottom round hole.

We then added wire mesh and dryer vents to both holes.

At this point, the door was done!


Step 2 (Power):

The next step was to add a power strip to the inside of the fridge. We drilled a hole for the power cord, and then glued an outdoor power box to the side of the fridge.

We screwed on the outer portion of the outlet and it was ready to supply power to the inside of the fridge! We were able to plug the computer fan into the outlet at this point.


Step 3 (Temperature):

The next thing we did was insert the temperature probe. This was done by drilling a small hole and feeding the probe wire through the hole. The probe wire was placed  roughly in the middle of the fridge, while the control box was adhered to the outside side of the fridge and plugged into an external power outlet. The probe wire senses the temperature and sends that information to the control box on the outside of the fridge, which has a control switch for you to control the set point. When the sensor reaches the set point, the fridge turns off/on in order to maintain the proper temperature.


Step 4 (Humidity):

The last step was to get the humidity right. We bought an ultrasonic humidifier that we filled with filtered water. We plugged it into the hygrostat which we then plugged into the outdoor power outlet on the inside of the fridge. The hygrostat monitors the humidity and turns the humidifier on/off as needed.

VOILA! And with that our curing chamber was all set up and ready for its first trial: Bresaola!


Resources:

And, again. Here are the sources that were so useful for our endeavors!

http://curedmeats.blogspot.mx/2007/07/key-equipment-piece-3-curing-chamber.html

http://benstarr.com/blog/how-to-convert-a-refrigerator-for-curing-meat-or-aging-cheese/

http://pickledpig.wordpress.com/2010/09/24/the-curing-chamber/

http://mattikaarts.com/blog/charcuterie/meat-curing-at-home-the-setup/


Disclaimer: All information stated on this website is for information purposes only. The information is not specific advice for any individual. The content of this website should not substitute electricity/engineering/building advice from a professional. If you have a problem, speak to a professional immediately about the issue.

Filed Under: Charcuterie Tagged With: charcuterie, cured meats, curing chamber, diy

Curing Chamber: Instructions

April 1, 2014 by AOG Leave a Comment

And so the adventure begins.  It would be hard to say where the idea of curing our own meats came from originally, but once it was there, it became an obsession that was never far from mind. There are so many appealing aspects to curing your own meat, from the self-sufficiency it affords, to the ability to create un-tasted and commercially non-viable delicacies, to the intellectual challenge of understanding and optimizing the chemistry behind what is going on.

There are many different styles of cured meats, from sausages made from ground meat to prosciuttos made from whole muscles. In addition, there is a wide range of materials and methods that are used: from caves in Tuscany, to refrigerators in New Jersey; from natural bacteria, to Bactoferm M-EK-4, it’s all been done (and if it hasn’t been done yet, you can bet that someone is thinking about trying it as we speak).

Due to our lack of a cave with low temperatures and high humidity, the first step in our journey was to create a curing chamber for our meat. The goal for a curing chamber is to create an environment that has the relatively cool temperatures of  50 F/10 C and the relatively high humidity of 70-80% RH. The best way for us to do this was to outfit an old fridge with all the necessary trappings.

We were able to find a used fridge on Craigslist that was suitable for our purposes, larger than a traditional dorm fridge, but smaller than a regular sized fridge, and lacking a freezer section meaning that we could use all the available space to hang our meat.


There are 4 important aspects you want to be able to control in your curing chamber; air flow, humidity, temperature, and power.

Air Flow: Achieved through inserting a computer fan into the fridge door. Air gets blown out from the fan, which is inserted at the top of the door. Air comes in through the bottom of the door, which has a dryer vent on the inside of the door to block backflow through the same vent. The bottom vent should be covered by wire mesh to prevent rodent/insect entry, while the computer fan should be covered with a dryer vent for the same purpose.

Humidity: Achieved through the use of a humidifier, attached to a hygrostat to regulate the humidity. The RH in a fridge is much lower than needed, so we added an ultrasonic humidifier that needs to be refilled about once every two weeks or so, depending on different factors.

Temperature:Achieved by inserting a temperature sensor into the fridge, and attaching that to an on/off switch for the fridge. The fridge will naturally run colder than the desired 50 F/10C that we want, so the temperature sensor will detect when the fridge is at the correct temperature and switch off power to the fridge.

Power: Power for the internal accessories achieved by mounting an outdoor power strip on the inside door-side side wall of the fridge.


Our finished product looked like this:


Resources:

Of course, we never would have even known where to begin with this construction without the help and guidance of other like-minded bloggers.

http://curedmeats.blogspot.mx/2007/07/key-equipment-piece-3-curing-chamber.html

http://benstarr.com/blog/how-to-convert-a-refrigerator-for-curing-meat-or-aging-cheese/

http://pickledpig.wordpress.com/2010/09/24/the-curing-chamber/

http://mattikaarts.com/blog/charcuterie/meat-curing-at-home-the-setup/


Disclaimer: All information stated on this website is for information purposes only. The information is not specific advice for any individual. The content of this website should not substitute electric/engineering/building advice from a professional. If you have a problem, speak to a professional immediately about the issue.

Filed Under: Charcuterie Tagged With: charcuterie, cured meats, curing chamber, diy

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