Clean and wash spring onions and cut them into fine pieces. Wash, clean, quarter and seed the tomatoes. Cut the flesh into small cubes. Wash sage, pluck leaves, chop if necessary.
Peel the garlic and press it through a garlic press. Heat 2 tablespoons of olive oil. Sauté garlic, add minced meat, stir-fry. Season with salt, pepper, sage and crushed chilli. Stir in spring onions and tomato paste.
Wash the aubergines, decorate the peel with grooves at regular intervals (groove cutter or fluting machine). Cut deeply lengthwise. Fry briefly all around in 4 tablespoons of hot olive oil.
Pour in the chopping mixture. Spread any leftover minced meat in an ovenproof dish. Place aubergines on top. Pour on the stock. Cook in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for 20-30 minutes.
Garnish with sage and flowers, serve with olives.