Korean-Inspired Short Rib Sandwich with Kimchi Jam 🍖🥪😋👍

Recipe Below

Short Ribs:
.1 kg short ribs (membrane removed).
.800 ml good quality beef stock.
.5 shiitake mushrooms.
.1 tbsp gochujang paste.
.½ brown onion.
.2 garlic cloves.
.1 thumb of ginger.
.2 tsp soy sauce.
.2 tbsp rice wine vinegar.
.1 tbsp beef fat.
.Salt.

Kimchi Jam:
.400 g kimchi.
.50 g brown sugar.
.1 tbsp rice wine vinegar.
.2 tbsp unsalted butter.

Gochujang Mayo:
.2 tbsp mayo.
.1 tsp gochujang.
.1 tbsp lemon juice.
.Pinch of salt.

Garnish:
Spring onions/scallions greens only.

To Serve:
.Soft baguette.
.Swiss cheese.