Mostarda di Cremona isn't actually a mustard, rather it's summer fruits preserved in mustard-infused syrup. Use a mix of peaches, pears, plums, apricots, nectarines, quince, cherries, citrus rind. Makes for a beautiful holiday gift.
The soft crunch and fiery bite of kimchi make it a great addition to tacos, pasta, meats, fish, you name it. Great as a snack right out of the jar. Like most food projects, the best kimchi is made with loving hands at home.
Gathering sea beans, a.k.a. Salicornia and glass wort, is a very satisfying foraging project. They're easy to spot, easy to pick and easy to cook. Well worth it. The salty crunch works wonders on clam sauce with linguine.