Best way to store/stabilize a yeast culture?

[tCan]

Hello! I'm brand new to home brewing! I just finished my first fermentation using apple cider with a few oz of honey, sugar, and some bread yeast o). I know bread yeast is a bad choice, so I've tried to start my own culture.

I've a got a culture of yeast going, started from some grapes I picked up from the grocery and some spring water. I put these in a mason jar. I also tried some raisins (brand: Sunmaid) but that failed. Honestly, I expected the grapes to fail and the raisins to work.

Anyway, I've got a bit of bubbles in my grapes and I've fed them 2 heaping tablespoons of sugar in addition to the grapes that they're working on. I was wondering if there was a good way to store and or stabilize the culture. Obviously if I leave them as is, they'll die from alcohol poisoning.

I'll be leaving town shortly for a few weeks and I need to know what to do with my culture! Should I remove the grapes?

 

[daksin]

Sorry, but we can't give advice to the underage trying to capture yeast to make hootch because they can't buy brewer's yeast until they're 21...

 

[tCan]

I'll be 21 by the time I arrive back in town to work with the culture. Dec 28, 1990. Besides, if I needed better yeast I could just order it online. Also, there is nothing illegal about buying/having a yeast culture. I'm just running an operation called "How cheap can we go and make something drinkable/tasty."

I'm also gonna leave the jug I already have for a few weeks too....

 

[tCan]

Bring up my post.