If you haven't already, grind the flax seeds in a grinder (coffee or flax seed) until floury. Set aside.
In a bowl, whisk the eggs. Add water, butter and milk in order, whisking until combined.
Gradually add the salt, flax, then the flour and mix with a wooden spoon until the mixture is smooth and homogeneous. Leave to rest for 15 minutes.
In a non-stick pan, preheat the butter or oil over medium heat. Pour in about 5 tbsp. (75 ml) of batter per pancake and spread it evenly. Cook for 2 minutes on each side or until nicely browned. Keep warm. Repeat for the rest of the mixture. Don't forget that the pan remains hot after cooking the first crepe. As a result, the oil heats up more quickly and therefore the cooking time for the following pancakes is noticeably shorter.
NOTE:
Serve the hot pancakes as a side dish or as a main dish with syrup, jam, cheese or your favorite topping.
One reader suggests replacing each egg with 1/2 mashed ripe banana, which gives a wonderful result. It's worth trying.