Yes, that is possible! Maybe you don't always like or tolerate some of the ingredients in the recipes. Simply remove them or add your favorite ingredients. To delete ingredients, simply slide them to the left (iOS) or press the three dots (Android) and press "Delete". To add other ingredients, press "Add ingredient" below the ingredient list. The new ingredient will be marked in the recipe with a small blue marker. Above the ingredient list you will now see both your individual recipe and the original recipe.