My veggie moussaka

Name: My veggie moussaka
Cook time: 2 h 40 min
Total time: 2 h 40 min
Cuisine: European, Mediterranean, Greek
Ingredients: 20 g dried porcini mushrooms; 2 onions; 8 cloves of garlic; olive oil; ½ a cinnamon stick; 1 bunch of fresh oregano (30g); 2 tablespoons red wine vinegar; 2 large aubergines (400g each); 1 kg potatoes; 2 x 400 g tins of quality plum tomatoes; 200 g feta cheese; 2 large free-range eggs; 300 ml semi-skimmed milk; 1 whole nutmeg for grating