What can I use as a fermentation weight?

Hello! As a fermentation expert, I'm here to help you with your homebrewing and fermentation needs. When it comes to using a fermentation weight, there are several options you can consider. A fermentation weight, also known as a fermenter weight or kettle bittering unit, is used to keep the airlock in place and to prevent the ingress of wild yeasts or bacteria into the fermenting vessel.

Here are some alternatives you can use as a fermentation weight:


1. Spring Clamps: These can be used to secure a sanitized marble or other small, heavy objects on top of the airlock.

2. Magnetic Weights: If you have a magnetic stirrer, you can use the magnetic weights that come with it.

3. Stopper with a Hole: A rubber or glass stopper with a hole in the center can be used with a string or wire to hang a weight.

4. A Sanitized Marble or Stone: A small, sanitized marble or stone can work, especially if you're using a blow-off tube instead of an airlock.

5. A Rubber Band: Sometimes, a simple rubber band can be used to hold the airlock in place, although this is less secure.

6. A Small Ziplock Bag: Fill a small ziplock bag with water, sanitize it, and place it on top of the airlock.
7.
A Piece of Wood: A small piece of wood can be used, but make sure it's sanitized to avoid contamination.

Remember, the key is to ensure that whatever you use is clean and won't introduce any unwanted microorganisms into your fermentation process.

A Small Ceramic or Glass Dish. Mini jelly jars, condiment dishes or small dessert ramekins that fit inside the mouth of the jar work very well to weigh down fermenting veggies. Partially fill the jar with water to create extra weight or add these jars on top of fermentation weights to help keep vegetables submerged.