Russian Mushroom Caviar

1 Preheat the oven to 200 ºC or 390 ºF. 

2 Cut mushrooms in quarters, slice onion and keeping garlic cloves in shell, smash them slightly with a back of a water glass. 

3 Mix mustard, 3 tablespoons olive oil and white wine vinegar. Add a pinch of salt and black pepper.

4 Arrange mushrooms, onion slices and garlic cloves on a baking tray. Sprinkle with the sauce and roast for 20 minutes.

5 Remove garlic cloves from shells, add the rest of olive oil and dice everything together with a Tupperware chopper  or blender. The mixture should have a grainy consistency of caviar. Season with salt and pepper to taste.

6 Serve over rye bread, crackers or Russian pancakes. Optional: sprinkle with chopped chives. Enjoy!