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| salted butter: 3 Tbl |
| onions (chopped): 3 Tbl (minced) |
| white mushrooms: 0.5 lb (finely chopped) |
| garlic: 1 clove (minced) |
| whole nutmeg: 1/4 tsp |
| dry vermouth: 1 Tbl |
| regular mayonnaise: 2 Tbl |
| salt (to taste) |
| black pepper (to taste) |
Credit: Food.com