Stinging nettle omelette from Ancient Rome

"PATINA DE URTICA" is the Latin name of this frittata made with stinging nettles. Nettles will stop stinging once cooked.
You need: stinging nettles, black or long pepper, garum fish sauce*, olive oil, eggs
*You can use Asian fish sauce or, if you prefer, soy sauce. I use the Italian colatura di alici which is practically the same thing as garum.
Find more recipes in my cookbooks "GARUM: Recipes from the Past“ (available in English, German, French and Italian) , "From Eden to Jerusalem: Recipes from the Time of the Bible“ (English, German and Italian), or "VEGETUS: Vegetarian Recipes from the Past“ (English, German, Italian).
Music: Levin MacLeod, Healing (RUclips audio library, creative commons)