Just on a funny note. I started a couple of new colonies the other day and I didn't bother using a measuring device for the yeast and sugar. I'm sure the yeast was about right, but I'm also sure that I put more sugar in than required, but I thought nothing of it. I added the starter flies after 24 hours and they were all dead within 12 hours. When I opened the containers for a closer look it smelled like a screwdriver (vodka/orange juice). So now I know either to follow the recipe exactly or add ice!!