For the jam, wash and dice the tomatoes. Peel 2 onions. Finely dice onions and bacon. Fry both in oil in a saucepan. Stir in tomato paste, tomatoes, sugar and vinegar, bring to the boil and cook for about 5 minutes. Season with salt and pepper. Fill half into a clean twist-off jar (approx. 400 ml content), close it, let it cool down. Put the rest aside.
For the soufflé, clean, wash and coarsely grate the courgettes and press them in a cloth. Peel and coarsely grate 1 onion. Wash and chop the herbs. Preheat the oven (electric cooker: 200 °C/circulating air: 180 °C/gas: see manufacturer).
Separate two eggs. Beat the egg whites until stiff. Mix egg yolks, 4 eggs, zucchini, onion, herbs and cream cheese. Season with salt and pepper. Crumble feta. 3⁄4 Fold in feta and beaten egg white. Pour into a greased casserole dish, sprinkle with the rest of the feta. Bake in a hot oven for 30-35 minutes. Serve with jam set aside.