In a big bowl, mix together your milk, pumpkin, egg, oil and vinegar.
Combine the flour, brown sugar, baking powder, baking soda, allspice, cinnamon, ginger and salt in a separate bowl. Gradually add your dry ingredients into the pumpkin mixture, and stir gently to combine.
Spray a griddle or large pan and and cook about 1/4 batter for each pancake. Cook pancakes over medium heat, until just browning on each side. Do not over cook! Serve with whip cream and syrup, if desired.