Poached Eggs With Oyster Sauce with bread

8 eggs 200 g field salad greens (mache, corn salad) 1 1/2 liters water 3 tablespoons vinegar 30 g butter 1 onion , chopped 4 tablespoons concentrated tomato[...]

2 tablespoons olive oil 1 medium onion , sliced 2 medium red bell peppers or 2 medium green bell peppers , chopped 2 garlic cloves , finely chopped 1 small[...]