Open your fridge and what do you see? The ingredients for a meal, perhaps, or something to snack on. Yet a growing number of sustainably minded textile entrepreneurs are cooking up something else. Though many are still in the prototype phase, food-related fabrics may be part of the next great fashion frontier. The following is a guide to the fruit and veggies that could end up in your closet.

Mushrooms

When it comes to replacement leathers, biomaterials made from fungi appear to be leading the way. In March, Stella McCartney introduced a black bustier top and utilitarian pants made out of Mylo, a material made from mycelium, the networks of threadlike roots from which mushrooms flower. (“Mushroom leather” can be a slightly deceptive shorthand.)

Ms. McCartney, along with Adidas, Lululemon and Kering, announced a partnership in the fall with Mylo’s creator, Bolt Threads, a start-up in California, to invest in the development and production of the leather. Last week, Adidas announced it would be producing a version of its famous Stan Smith sneaker using Mylo.

GRAPES

Wine pulp from grape skins, seeds and stems is being made into a leather called Vegea by an Italian company of the same name. Blended with vegetable oil and a water-based polyurethane, the pulp is coated onto cotton, resulting in a vegan leather alternative. While the material is not yet biodegradable and is tricky to recycle, producing it is a way to reduce waste from the wine industry. According to Vegea, roughly 10 liters of wine makes 2.5 kilograms of grape waste, which can be used to make one square meter of wine leather. Vegea is now being adopted by brands like Pangaia to make sneakers.