Cook on low for 5–7 hours. Switch to high when you add the cream, cornflour and Parmesan. Wash the lemon well before grating. Lemons can vary, so if your sauce doesn’t taste lemony at the end ...
The taste from the onions and leeks cooked previously will flavour them. Stir the lemon zest and cream into the prawns. Toss the warm pasta with the spinach, add the leek and onions and then the ...
Line an 8- or 9-inch square pan with two perpendicular strips of parchment paper, leaving some overhang so baked lemon squares can be easily lifted from pan. In a large bowl, whisk together flour ...
(Alternatively, mash in a bowl with a fork.) Blend until smooth, adding a little water if needed to achieve a sauce-like consistency. Season with salt or lemon juice to taste.