How to Clean Morel Mushrooms

Cleaning dirt, sand, and bugs from mushrooms is a common challenge for foragers. Here are some tips for reducing the amount of these that make their way into your cooking.

Clean Mushrooms As You Pick

One key characteristic of morels is their honeycomb pockets. Unfortunately, these are also a great place for dirt to collect and can be extremely challenging to clean. Limiting the dirt that makes it into your bag is one of the easiest ways to keep mushrooms clean. Cutting off dirty stem bases before putting mushrooms in your bag keeps that dirt from spreading to cleaner ones.

Cutting mushrooms off at the base keeps soil out of the bag. Whether pulling harms the fungus is debated. A long-term Swiss study of forest mushrooms found no difference in later fruiting between cutting and pulling (Egli et al., 2006), while in a USFS study of chanterelles in Oregon, cut plots showed a slight drop in numbers and weight (PNW-GTR-576). Neither study was on morels. Some Oregon forests ask pickers to cut, so check the rules where you are.

Leave Heavily Infested Mushrooms In The Forest

Insects and larvae are often found inside the hollow chamber of morels. If a mushroom is heavily infested or has started to rot, consider leaving it in the forest rather than carrying it in with the rest.

Dry Cleaning (Method 1)

1. Brush Off Dirt: Use a soft mushroom brush or a soft-bristled toothbrush to gently brush off any dirt and debris from the mushrooms. No water is used in this method.

2. Cut and Inspect: Slice the morels in half lengthwise to expose the insides. Check for any dirt, grit, or larvae.

Saltwater Bath (Method 2)

Morels can handle water better than many other species.

1. Prepare a Saltwater Solution: Mix about 1 tablespoon of salt per quart of cold water in a large bowl.

2. Soak the Mushrooms: Submerge the morels in the saltwater and let them soak for about 10–15 minutes. The saltwater helps dislodge larvae and insects hiding inside.

3. Agitate Gently: Swirl the mushrooms gently in the solution to help loosen dirt and larvae.

4. Rinse and Drain: After soaking, remove the morels from the saltwater and rinse them thoroughly under cold running water to remove any remaining salt and dirt.

5. Dry on Paper Towels: Place the cleaned mushrooms on paper towels and pat them dry.

Simple Water Rinse (Method 3)

1. Rinse Under Running Water: Hold each mushroom under cold running water and use your fingers or a soft brush to gently clean the surface.

2. Inspect and Cut: Cut the mushrooms in half lengthwise to inspect for any remaining dirt or larvae.

3. Dry Thoroughly: Lay the cleaned mushrooms on paper towels to dry before cooking.

Cooking Morels

Always cook morels thoroughly. Raw or undercooked morels can cause gastrointestinal illness, and the responsible toxin has not been identified. Thorough cooking often lowers the chance of a reaction but does not rule one out. In spring 2023, a restaurant outbreak in Bozeman, Montana, made 51 people ill and 2 died; both had chronic underlying conditions, no causative agent was identified, and raw morels were more strongly associated with illness than partly cooked ones (Demorest et al., CDC MMWR, 2024). See our morel toxicity guide for more.

If you have not eaten morels before, consider eating only a small amount the first time and waiting 24 hours before eating more. The same applies to any wild mushroom that is new to you.

Sources: Mushrooms of Cascadia (Siegel & Schwarz, 2024); MycoMatch (© Ian Gibson), a compilation of published descriptions through which most other field-guide authors named here are quoted.