Dried marrowfat peas can be used in recipes that call for most other beans. LIke chilis and soups, salads, or add to mashed potatoes.
Most common Dutch recipe is a chili-like dish with smoked sausage and Speck/smoked bacon.
Fresh peas are needed for “mushy peas”. The drying process turns tem brown and hard. Almost nobody buys fresh kind here, very dear and season is very short.
