Wash the grapes, pluck, halve and possibly remove the seeds. Bring 100 ml water, lemon juice and sugar to the boil. Bring the grapes to the boil briefly. Let cool off.
Chop toffees coarsely, except for 2 pieces. Bring milk, chopped toffees and 1 pinch of salt to the boil while stirring. Add semolina while stirring and bring to the boil briefly. Remove from heat, cover and leave to swell for 5-10 minutes.
Separate the egg. Mix egg yolk and 1-2 tbsp. hot semolina. Then stir into the remaining hot semolina. Beat egg white until stiff and fold in loosely. Arrange semolina with grape sauce on plates. Cut the remaining toffees into slices and spread on top.