Production of isoprenoids

A fermentation method comprising:

• a. contacting a recombinant yeast with a fermentation medium wherein the recombinant yeast comprises a plurality of chromosomally integrated recombinant nucleic acid molecules, wherein each recombinant nucleic acid molecule encodes an enzyme that converts hydroxymethylglutaryl-CoA to L-mevalonic acid;
• wherein the recombinant yeast is capable of producing an isoprenoid product having 5, 10, 15 or 20 carbons and wherein the fermentation medium comprises a sugar carbon source in a first amount between about 1 gram per liter and about 100 gram per liter of fermentation medium;
• b. culturing the recombinant yeast under conditions wherein the sugar carbon source in the fermentation medium is consumed such that the fermentation medium comprises the sugar carbon source in a second amount which is less than the first amount;
• c. maintaining the culturing conditions such that the fermentation medium comprises the sugar carbon source in an amount that is equal to or less than the second amount;
• and
• d. recovering the product.