Cheddar and Jam Pancake Sandwich

Name: Cheddar and Jam Pancake Sandwich
Cuisine: American
Ingredients: 1 1/2 cups (375 mL) Milk; 1 tsp (5 mL) white vinegar; 2 cups (500 mL) all-purpose flour; 1 tbsp (15 mL) baking powder; 3 tbsp (45 mL) sugar; 1/2 tsp (2 mL) ground cinnamon; 2 eggs; 1/2 tsp (2 mL) vanilla extract; 1/3 cup (80 mL) jam your choice (fig; apricot; blueberry; blackberry; etc.); 3 tbsp (45 mL) water; 6 oz (180 g) Canadian Medium Cheddar shredded; 1/3 cup (80 mL) pecans in pieces