I don't have a bosch so I can't help you with that but this is my waffle recipe that I/we love. They also freeze wonderfully, fwiw
2-4 eggs, separated (I usually used 3)
1 ½ cups buttermilk or sour milk
¼- ½ cups oil or melted butter
2 TBSP brown sugar
2 tsp. Baking powder
½ tsp. Baking soda
1 tsp. Vanilla
½ tsp. cinnamon
½ tsp salt
2 cups flour: ½ whole wheat and ½ white flour
Beat egg whites until stiff. In a separate large bowl, beat yolks with milk. Add remaining ingredients, beating after each addition. Fold in beaten egg whites, gently. Pour into lightly greased pre-heated waffle iron (medium-hot) and bake until it stops steaming.
You can mix up the flour - buckwheat, all whole wheat, all white, half'n half, whatever as long as it comes to 2 cups
A single recipe doesnt make that much, so I usually double (or triple) so I have some to freeze...