Wikipedia Article About Humboldt fog cheese on Wikipedia Humboldt Fog is a goat milk cheese made by Cypress Grove Chevre, of Arcata, California, in Humboldt County. Humboldt Fog is a mold ripened cheese. It has a central layer and outer covering of ash. It has a white exterior mold. This cheese won first Prize for American Original Cheese at an American Cheese Society competition in Washington, D.C. in August, 2002.