Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: The lid of mine has a small vent hole with silicone grommet. Is something supposed to go in this hole?  Most crock pots are not vented.
Document: My old crock pot was from the 1970's so needless to say this one is way better! I cooks very evenly and I like being able to remove the inside to clean it. I didn't realize you only lock the lid when you are traveling with it but that's a nice feature I guess. I mean it's a crock pot - and it cooks. There was a small dent in mine but I might have done that putting it away. I like the simple low, med, hi knob.
Love the fact that the ceramic bowl lifts out and can be washed separately. Glass lid has two small vent holes to release steam. Like the fact that you can clip the lid tightly and carry the entire unit by the two handles. Only nit is that when stored, the silicone basket for the lid sticks to the ceramic bowl and needs to be lifted off carefully to avoid potential rips. We use a paper towel between lid and bowl for storage to prevent this.
And even more so with the handles that stick out really far make the length of the unit cumbersome for storage. While the lid has 2 small holes in it to vent, the instructions do remind you to not lock down the lid while cooking. And like all the slow cookers I have used, the exterior gets very hot.
Provides slow cooker and when the lid is sealed a bit of pressure cooking.Two small vent holes allow stem to escape. Havent made a portable trip with it yetbut it looks sturdy enough to handle travel.Its a must have. Bought it on sale and it was twice as nice.
We bought this to go cross country October 2013 . Our ford CMAX has a three prong electric outlet, which allowed us to cook our dinner in this crock pot as we drove from state to state. Cheaper and yummier than eating dinner out each night! Now I use it at home for small crock pot meals!
I received this slow cooker today. The slow cooker looks nice, but the outside base is very lightweight and cheap looking and mine has some dents in it. Not sure if I will keep or replace with something else.
Got this for my mom for Mothers Day. It was delivered at the perfect time. Exactly what I was hoping for. I wish they still made the lids with the spoon holder, but I love these crock pots. Easy to use. Easy to clean. Nice looking and with the side lid locks, safe. Perfect!
I have been married for 35 years. We have owned several crock pots during that time. Never have I owned this nice of one. Cooks evenly,  cleans up in a breeze. So nice for the lid to lock and take it with you to pot luck, family gatherings. And the ribs I made it...yummy. Meat fell off the bone. I would tell anyone that this is a winner!
If you fill the slow cooker to the top (obviously over-filled) you will only fit 5 quarts + 1 cup of liquid. It will hold 6 quarts of liquid when filled all the way to the top ledge, where the lid is supposed to go (right before overflowing). In short, this will not cook 6 quarts of liquid.
love the size. I've already made a large pork shoulder for pulled pork and a large squash recipe. I think you could probably put a small turkey in it easily.The lid has a rubber on it and there are metal prongs that gives you a seal vs just a lid laying on top like most small models.The crock actually comes out of the heater so it is easy to clean up. you could use it for serving too.
Answer: It's for a thermometer. Meat.