Yeast Cake

Hello again. So this past weekend I bottled my hefeweizen. I just finished bottling and finally decided to clean out my carboy. I noticed the yeast cake on the bottom and make a quick split decision to see if I could try to save it. My parents jar tomato sauce so I ended up getting a jar and lid from their cupboard. I poured the whole yeast cake into the jar and stuck it in the fridge.

Now here is my question. I saved the yeast cake only because after reading so many threads on this forum I hear people say they always save their yeast cake when they can. Now that I have this yeast cake...what can I actually do with it? Thanks.

You wash the yeast. Here ya go: https://www.homebrewtalk.com/f13/yeast-washing-illustrated-41768/

Did you sanitize the jar prior to pouring the cake in there?

No I did not sanitize the jar. Was I supposed to?

Yep. I'd toss that.

O well, it was worth a try. Now that I know I will do it properly next time.