Wash, clean and dice the tomatoes. Peel garlic and chop finely. ##Wash and dry sage and, except for something to garnish, pluck leaves from the stalks and chop.
##Wash the meat, dab dry and cut into cubes. Heat oil in a pan. Fry the meat for 3-4 minutes while turning, season with salt and pepper and remove. Put the tomatoes in the pan and fry for about 2 minutes.
Add tomato paste, sage and stock and simmer for 4-5 minutes. Cook the lasagne sheets in boiling salted water for 7-8 minutes. Clean and wash the spring onions, cut them into rings and, except for something to sprinkle, add them to the ragout with the meat.
Simmer for another 1-2 minutes. Stir in the chilli paste. Season ragout with salt, pepper and sugar. Drain the lasagne sheets, but leave some cooking water in the pot. Lift out ##lasagne##leaves one after the other and arrange on plates with ragout.
Sprinkle with remaining spring onions and garnish with sage.