Did you use 100% mesquite flour? If so, you need to mix it up. Here is the recipe I use. It is from Pearl, who runs the mesquite milling workshop in Cascabel along with her husband Daniel. We took pods out there to mill and have enough to last a long time. I keep it in the freezer.
Make a base of dry ingredients. You can double or triple. Mix well and store in airtight container:
1 cup mesquite flour
1 cup whole wheat flour
1 cup unbleached flour
1 tablespoon baking powder (I use Redmond's since it is aluminum-free)
1-1/2 teaspoons baking soda
1 teaspoon salt.
When ready to make pancakes:
Mix together:
1 egg
1 tablespoon oil
1 cup buttermilk, sour milk or fresh milk made sour with a tablespoon of vinegar added
Add 1 cup of the dry mix to the liquids and whisk together until just moistened. Don't overmix or the pancakes will be tougher.
Add more milk to thin as needed. Cook on hot griddle and enjoy with your favorite syrup or toppings.