Add the zest and juice of the lemon and lime and place over a medium heat. Continue to whisk until the mixture has boiled and thickened. Remove from the heat, add the caster sugar and egg yolks ...

Are you a lemon fan and love adding a tangy twist to your food? Here are 6 fun lemon types for you to try: Also called Thai lime or makrut lime, this variety is known for its intensely fragrant leaves ...