Inexpensive Heat Mat Ensures Tastiest Home Brewed Kombucha
Keep us brewing and blogging! We earn a small commission from purchases made through links on this site without increasing your cost. Thank you for your support.
Controlling the temperature of your kombucha brew is the easiest ways to ensure that you bottle your kombucha when it is at its tastiest. The temperature of the brew is directly related to how long the brewing process takes.
It also impacts the health of the SCOBY. Brewing kombucha at too cold a temperature results in weak SCOBY growth, and weak flavor. It also makes your SCOBY susceptible to mold – your worst kombucha brewing enemy.
You will likely discover that there is a certain sweet spot in the brewing process at which time the kombucha is exactly to your liking – slightly tart, with a hint of sweetness. To find this sweet spot each time you brew requires that the fermentation process occurs at a consistent temperature.
A quality digital thermometer and taking the time to record the brew temperature at regular intervals will make sure your kombucha brewing process results in a delicious brew every time.
Related: Learn about the best digital thermometer for kombucha brewers here
The SCOBY will be happiest and produce the best kombucha at its optimal temperature of between 78 and 82 degrees Fahrenheit. If you keep the room where your fermenter is located at that temperature, then you are all set.
However, if the room is much colder than that, it is best if you have a way to keep your brew warm.
There are a few ways of accomplishing that. You can purchase specially designed heating units designed for kombucha brewing. If they are within your budget, they work well.
The better ones (top two in the list below) even include a temperature control making them the ideal solution.
These fermentation brew heaters have excellent ratings from customers.
|Top Top Top||Adjustable Kombucha Heat Mat - Bucha Brewers Kombucha Heating Wrap, Kombucha Warmer, Fermenter Heater||Prime||Buy Now|
|Top Top||Kombucha Heating Wrap - Black||Prime||Buy Now|
|Top Top||Northern Brewer - FermoTemp Electric Fermentation Heater||Prime||Buy Now|
|Top Top||kitchentoolz Waterproof Seedling Heat Mat Hydroponic Warm Heating Pad 3" x 20" with Adhesive Thermometer for Kombucha Brewing, Beer Brewing, Fermentation, Seedlings & Plant Germination (3" x 20")||Prime||Buy Now|
We have found that the most inexpensive way to keep kombucha brewing at the proper temperature (and one that has worked for us for years) is something called a seedling warming mat. It is a plastic mat that is large enough to wrap about halfway around the fermentation jar and creates a small amount of heat. It will warm the brew evenly.
|Top||VIVOSUN Durable Waterproof Seedling Heat Mat Warm Hydroponic Heating Pad 10" x 20.75" MET Standard||Prime||Buy Now|
|Top||MET certified Seedling Heat Mat, Seedfactor Waterproof Durable Germination Station Heat Mat, Warm Hydroponic Heating Pad for Indoor Home Gardening Seed Starter(10" x 20")||Prime||Buy Now|
|Top||BN-LINK Durable Seedling Heat Mat Warm Hydroponic Heating Pad Waterproof 10" x 20.75" for Seed Starting Greenhouse and Germination||Prime||Buy Now|
|Top||VIVOHOME 20W Waterproof Seedling Heat Mat for Seed Starting Propagation and Increase Germination Success 10 Inch x 20.75 Inch MET Safety Standard Certified||Prime||Buy Now|
The only drawback we have found to using an inexpensive heater is that there is no easy way to control the temperature exactly. That is also true of some of the dedicated heaters above that wrap around the kombucha brewing jar.
However, by using an outlet timer, you can set the heating mat to go on and off at regular intervals. With a little experimentation, it is easy to control the kombucha brew within a couple of degrees.
We have recently discovered an easier way to keep our brew at the perfect brewing temperature during the cold months. The manufacturers of seedling mats sell thermostats that work well to keep the temperature perfectly in the correct range. The thermostat plugs into the power outlet and the heating mat plugs into the thermostat.
A temperature sensor probe is included that is affixed to the outside of the brewing jar. It senses the temperature of the jar and controls how much heat the heating mat puts out.
If you purchase or already own an inexpensive seedling heating mat, purchasing a thermostat insures that it is easy to keep the brewing temperature perfect.
Here are our picks for the top rated thermostats.
|Top||BN-LINK Digital Heat Mat Thermostat Controller for Seed Germination, Reptiles and Brewing Breeding Incubation Greenhouse, 40-108°F, 8.3A 1000W ETL Listed||Prime||Buy Now|
|Top||VIVOSUN Digital Heat Mat Thermostat Temperature Controller 40–108 ºF for Seedlings, Germination, Rooting, Fermentation and Reptiles||Prime||Buy Now|
|Top||ELECTECK Heat Mat Thermostat, Digital Controller for Seed Germination, Reptiles and Brewing, 41°F to 108 °F/ 5℃ to 42℃, 8.3A, 1000W, Black||Prime||Buy Now|
|Top||Pymeter Digital Temperature Controller Dual Probe Reptile Thermostat Controlled Outlet Cooling Heating Pad Heat Mat Thermostat for Reptiles Homebrew Aquarium Greenhouse Terrarium Carboy Heater||Prime||Buy Now|
By purchasing a thermostat-heating mat combo you can have your kombucha brewing at the perfect temperature with almost no effort! This is the method we now recommend!
|Top||Ohuhu Seedling Heat Mat 10" x 20.75" with Digital Seedling Heat Mat Thermostat Controller, Plants Hydroponic Heating Pad for Indoor Seedling and Germination||Prime||Buy Now|
|Top||RIOGOO 10"x20.75" Seedling Heat Mat and Thermostat Controller 68-108°F Digital Thermostat Controller IP68 Waterproof (Heated mat+Thermostat Controller)||Prime||Buy Now|
|Top||BN-LINK Durable Seedling Heat Mat Heating Pad 10" x 20.75" with Digital Thermostat Controller Combo Set Waterproof for Indoor Seed Starting and Plant Germination||Prime||Buy Now|
|Top||VIVOSUN 10"x20.75" Seedling Heat Mat and Digital Thermostat Combo Set MET Standard||Prime||Buy Now|