Crumble the yeast, dissolve in a good 1/4 l lukewarm water. Mix 350 g flour, 12 tsp salt and 1 pinch of sugar. Add yeast and oil. Knead everything. Cover and leave to rise in a warm place for about 45 minutes
Clean or peel, wash and chop the vegetables. Steam in little boiling salted water for about 5 minutes. Drain the vegetables and let them cool down, mix gorgonzola and sour cream, season to taste.
Knead the dough on a little flour, quarter it and roll it out into longish flat cakes. Place on a baking tray lined with baking paper. Spread the pancake with the sourdough, spread vegetables on top and sprinkle with Gouda. Leave to rise for about 15 minutes.
Bake in the preheated oven (electric cooker: 200 °C/circulating air: 175 °C/gas: level 3) for 20-25 minutes