they're simple
Culturing kits are readily available online.
I've ran a comparison test using Drosophila Hydei
two container types (foam plug/ felt top) and the food stuffs from
http://www.azdr.com
http://www.edsflymeat.com
felt top gives faster results than foam plugs (as expected)
I found that the AZDR feed produced well but was prone to fungus
the breeding was rapid, development was also much quicker
by about a week's time in total when compared to the enhanced ed's feed.
the fungus will be a problem that I'll solve with some inhibitor next time around.
assuming that it's not symbiotic -which it may be.
granted this is only my experience and the sample size was small
but when it's all taken into account, it's good to know
if I want to retain a culture for longer periods of time
vs quick production for hungry hatchlings.