Swedish Meatballs with Creamy Sauce and Homemade Lingonberry Jam

fresh breadcrumbs or Panko breadcrumbs

double cream (heavy whipping cream)

minced beef

sea salt

freshly ground pepper

allspice

Herbs de Provence or dried oregano

fresh parsley, finely chopped

garlic, finely minced

small red onion, finely diced

egg

(1 to 1 1/2) cups beef stock

double cream (heavy whipping cream)

soy sauce, or to taste

cornflour, mixed in a little water to make a slurry

parsley, finely chopped

chives, finely chopped

fresh lingonberries

plus 1 tablespoon) water

caster sugar