Trainer to explain the Veganism is usually a lifestyle choice rather than just a diet. It is common to avoid using all animal products not just in the diet.
Animal foods can be added to prepared foods that are not obvious. Trainer to provide products which contain these so trainees can read ingredient panels. Examples include:
Worcestershire sauce (anchovies)
Caesar dressing (anchovies)
Cochineal – red colouring (crushed beetles)