Using a whisk, mix almond paste and 240 ml water. Wash the parsley, shake dry and chop the leaves finely. Cut smoked tofu into small cubes. Peel onion and garlic clove, chop both finely.
Heat 2 tablespoons of olive oil in a frying pan. Fry the smoked tofu for about 3 minutes. Add onion cubes and garlic and fry for about 3 minutes. Add almond paste mix, lemon zest, lemon juice and parsley, season well with salt and pepper.
Bring the carbonara briefly to the boil and let it thicken.
Wash the zucchini and cut into spaghetti with a spiral slicer. Mix with 2 tablespoons of olive oil and some sea salt, carefully fold into the hot sauce and heat for 1 minute. Arrange in pasta dishes, drizzle with some olive oil and grind with black pepper.