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

Input:
Question: Do I need the crock lid?  No one seems to be using one. What is the advantage of having the lid
Document: One third of my cabbage and 1 tbls. salt. I put it in a bowl and start massaging it. It seems to take about 10 minutes until I have enough liquid to cover the cabbage. (I do this while watching television) Massage the next two thirds, put it all in this lovely crock, put on your cut down Tupperware lid, put the water filled jar on top and cover with a cloth. Every few days skim off the bloom. In a week you have wonderful sauerkraut.
We use this as a decorative and very practical container for our sourdough starter. It works perfectly! You will need to design your own lid but that is an opportunity for creativity!
If you enjoy being creative with foods, making pickles is very rewarding. To make pickles, you need a crock. Want one? Get this one.
I make roughly 4 pounds of pickles at a time and this is just the right size and height. You will have better success using a crock weight than the ziplock bag method. But either one works.
This crock was in great shape when delivered and worked for its intended purpose. Seems like it is of good quality. If you are looking for an opentop crock, this one is recommended.
My parents had (and still have) a great crock just like this one that we've used to hold cooking utensils on the counter since I was little. I decided I wanted one too, so I grabbed this one.Since I'm not using it to cook or hold food, I can't really comment on its qualities there. I can tell you that it's well made, very heavy, and quite large - almost too large for my little studio.
Great crock for pickles, but I'm having trouble finding stones that fit it. I did find a plate that fit and placed a rock on top but this was very awkward to deal with.I need to see if there are lids for this and I'll turn it into a flour container.
Exactly as described. Substantial. I am using this to hold my longer, frequently-used utensils and it's perfect. I'd imagine it would be wonderful as a crock in which to cook, but please note that it has no cover.
I love my crock. I recently made my first batch of super food sauerkraut and it was divine! I am now starting on my seventh batch. I used an old Tupperware lid, specifically a size D canister lid found on ebay (made in USA - food safe plastic) and cut it down to fit in the crock to hold the vegetables down. I put a large pickle jar filled with water on top. It works perfectly.
Wonderful sturdy jar! I really like this crock and am currently using it on the kitchen counter to hold cooking utensils. I love to cook and have a lot of utensils that I like having close at hand. This crock is large enough to hold them all and even has some extra room!
Answer: Depends on what you use the crock for.  If you are making Kraut....no lid, weights and a cloth cover so that oxygen can get to the brine.  If storing food that needs a cover then yes.