Blend flax seeds and soak them in water for 5 min
Whisk butter and sugar fluffy together in a bowl
Whisk flaxseed and milk together in another bowl
Mix the contents of the two bowls together
Pour the flour in the dough and stir until the dough is uniform
Spread lumps of dough (the size of a teaspoon) on baking paper. As the cookies will flatten out, leave a good distance between the blobs (approximately 3 cm between each)
Put as many currents on top of each lump of dough as there is room for (6-10 pcs)
Bake the cookies in the oven at 175°C for 10-15 min