A Nish
I didn't have any baking powder, only baking soda. I also didn't have any cream of tartar. So, I ended up replacing the baking powder with about 1/4 tbsp baking soda into the dry ingredients and around 3/4 tbsp lemon juice from the store into the wet ingredients. It worked well and I still got a lot of rise in each pancake (almost too much, as each pancake was about 1/2 inch thick!). I replaced the milk with about 1 1/2 cups of coconut milk, as 1 1/4 cups resulted in a too-stiff batter. If I had to make this again using the same ingredients, I'd cut back a bit on the baking soda and would beat the egg before adding it to the bowl.