Perfect Fluffy French Toast

Name: Perfect Fluffy French Toast
Prep time: 15 min
Cook time: 20 min
Total time: 35 min
Cuisine: European, Mediterranean, French
Ingredients: 2 medium eggs; 150 (¼ pint) milk; 1 vanilla extract; 1tbsp caster sugar; Knob of butter, to fry; 6 thick slices of brioche (taken from a loaf); Icing sugar, to dust; 150g (5oz) blackberries; 150 (5oz) blueberries; 25-40 (1-1½oz) caster sugar, to taste; 1 lemon juice, to taste