Mix the sour cream and quark with a hand mixer until creamy. Season with lemon juice, salt and pepper. Cut the spring onions into fine rings and fold in. Let it soak for at least 1 hour.
Goes well with baked potatoes, flatbread or grilled meat.
If you like it spicy, you can of course add more salt and pepper. But I would not use any other spices so that the fine aroma of the spring onions comes into its own.