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Clever ideas for cooking fly food?

Bruce Chase bachase at CWIS.UNOMAHA.EDU
Wed Mar 25 10:46:47 EST 1998

I use an 18 qt. electric Turkey roaster, available for about $79 from a
discount store like Target. It cooks up to 10-12 liters without burning,
and does not require much stirring or tending.  Weigh out the mix (I use a
half-recipe of the Caltech medium described in "Drosophila, a Laboratory
manual" by Ashburner, p. 400, and vary the amount of water depending on
the heating season), mix water in slowly, stir, and set on high,
stirring occasionally until it boils.  Then lower the temperature, boil
slowly 25 minutes and cool before adding mold inhibitor. It is trivial to
clean and much less of a production than putting a large pot over a
hot-plate or laboratory gas burners or in an autoclave.  Using it makes
fly food a minor production instead of an entire afternoon. For pouring, I
still use a pump.  I have heard of other pouring methods with large ported
plastic bottles that can be refilled.  I store the stoppered food in
sealed tupperware-like containers at room temperature, typically up
to 3-4 weeks, without a problem, adding a dusting of dry yeast just
when the food is first used.     

Bruce Chase
bachase at cwis.unomaha.edu

On Tue, 24 Mar 1998, George W. Gilchrist wrote:

> I'm going to be setting up a new lab far from a well established drosophila
> food kitchen and I could use some advice. What do folks use who regularly
> cook up 3-4 liters of food at a time? I've made small amounts in a beaker on
> a stirrer hot plate, but perhaps someone has some fantastic device or easy
> method for doing larger amounts. I would appreciate hearing about anyones
> great ideas or inventions. Or, if there is a FAQ devoted to this, a pointer
> would suffice. Comments on dispensing devices for 3-50 ml quantities would
> also be appreciated. Thanks a bunch.
> Cheers, George
> =======================================================
> George W. Gilchrist      gilchgw at zoology.washington.edu
> University of Washington     Phone:(206)543-4859
> Dept. of Zoology, Box 351800          FAX:(206)543-3041
> Seattle, WA 98l95-1800

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