Put mixture in small heaps on a non-stick
baking sheet (with 2 tablespoons for example).
Then put in the oven at 100°C or 212°F for 4 - 6 hours or better, overnight.
If you cook in a wood-fired oven, cook overnight.
Note: You can decorate meringues before baking by sprinkling them with flaked almonds, and/or with a pinch of cocoa powder.