How can food consumption be better calculated for a large party in a restaurant?
If there is too much food left over, it is just as annoying if guests remain hungry or not everyone gets the potato grating or they cannot get a second helping because too little potato grating was cooked.
The same applies to all dishes offered
Das ist doch das Problem des Restaurants. Wenn 100 Gäste eingeladen sind, ist es deren Problem, die Gäste satt zu bekommen.