Four Star Mushrooms

Chicago's mushroom.

Gourmet indoor mushroom farming

Urban controlled-environment mushroom farm on North Oakley growing seven gourmet varieties year-round across 17 climate-controlled grow rooms. Supplies Michelin-starred kitchens and offers 90-minute public tours. Spent substrate is recycled into soil-restoration projects.

By Joe Weber (founder/president) and Sean DiGioia (co-founder)

Notable for supplies Michelin-starred Chicago restaurants.

From fourstarmushrooms.com — verified 2026-05-18. Check the site for current hours and details.