Mix coconut milk with vinegar in a small bowl and let it sit for 5-6 minutes.
In the meanwhile, combine all the dry ingredients - flour, baking powder, baking soda, and salt.
Mix coconut oil and lemon juice in the milk and vinegar mixture. Pour into the dry ingredients.
Fold in the lemon zest and poppyseeds into the batter. Whisk until smooth and thick. The batter should have a soft dropping consistency, like a cake batter.
Preheat your waffle iron according to manufacturer's instructions.
Grease the waffle cavities well and pour a ladleful of batter in the cavity. Let the batter cook for 4-5 minutes, until golden and crisp.
Repeat with the rest of the batter. Serve warm. Enjoy!