Wash the lemon, rub dry and finely grate the peel. Halve the lemon and squeeze 1 half (use the other half for something else).
Heat oil in a pan. Sauté the garlic and onions in it over a medium heat until translucent. Add frozen peas and sauté for 1 minute.
Add 2 tablespoons of water, 1 tablespoon of lemon juice and the lemon zest and cook for 1-2 minutes. Pour in the soy cream and briefly bring to the boil. Puree everything with a hand blender and season with salt and pepper.
Cut the cress from the bed and sprinkle it over the pea puree.
The puree goes well with briefly fried meat or fish.