This includes a bag of light malt extract, one LME with dextrose for the species that like a little extra sugar, and one bag of LME + "Mega Nutrients" to experiment with a high nutrient solution, including LME, Nutritional Yeast and Bacteriological Peptones! Each is to be mixed with 600mL of H2O, sterilized @ 15psi for 25 mins and cooled before using.