Check fridge and food presses and make a shopping list to avoid buying items already at
home, etc.
Avoid shopping when hungry as this can lead to impulse buying, etc.
Buy fruit and vegetables loose not pre-packed so you only buy the quantity needed;
examine fruit and veg for ripeness or signs of food spoilage, etc.
Buy perishable items like meat, fish, milk in small quantities, etc.
Store food correctly to avoid it going off before using, etc.
Understand the difference between use-by and best-before dates,