Put the water in a small, shallow dish.
Sprinkle the gelatin evenly over the surface and leave for 5 minutes.
Warm the butter in a pan or a bowl in the microwave until it melts. Do not let it get hot.
Add the eggs, lemon juice, xylitol, lemon zest and Keto Chow to a blender (in that order) and blend.
Scrape down the blender as needed and continue to blend until thoroughly mixed.
Turn the blender to low, and pour the melted butter through the hole in the lid until mixed in.
Pour the lemon mixture into the skillet. Cook the curd, stirring constantly, over a low heat until it’s very thick and coats the back of a spoon, about 10 minutes.
Remove from the heat and add the bloomed gelatin.
Stir until the gelatin is completely melted and mixed in.
Place a sieve over a large bowl and pour the lemon curd through the sieve to remove any lumps.
Spoon the lemon filling into the cold crust and spread evenly.
Place pie in the fridge for at least an hour.