Being time efficient when making products, by grabbing enough of each ingredient for making the entire order of products before moving to the next ingredient.
For example, if you make 2 x Club and a 1 x Tunacado;
Start by adding pesto on all three sandwiches,
then add salt and pepper on all of them,
then avocado on all of them,
then chicken on 2 of them and tuna on one,
then tomatoes on all three.
This way you will be more efficient when making multiple products at the same time.