Directions:
1. Pour 50 ml of white wine and chopped red onion into a pan and cook until syrupy, add 100g of fish stock, then add 10g of basil and salt to taste and finish with 20g of unsalted butter to make a spice sauce.
2. Cut the asparagus into strips, sauté them in butter, then spread them on a plate, add the plaice, steam them for 3 minutes and pour the spice sauce over them.