Chicken breast is the cut people over-buy and then resent. A huge bag that freezer-burns because nobody had a plan is not a saving. A tiny pack that sends you back online on Wednesday is a nuisance. At Meatsupermarket.com the honest split is a chicken breasts 1kg pack for the next few meals, and a 5kg bag when you are genuinely batch-cooking. Chicken breast in bulk only works if you will portion it on the day it arrives.

The 1kg pack
Chicken Breast 1kg is four sensible adult portions, or three generous ones, or a curry plus a leftover lunch. It lives in the fridge, not the chest freezer. Season it, cook it, move on. This is the pack for small households, for people who are tired of 5kg hanging over them, and for anyone who wants chicken tonight without a defrost calendar. If you cook breast twice a week and nothing else, two 1kg packs a fortnight beats a 5kg bag you never finish cleanly.
The 5kg bags
Fresh 5kg Chicken Breast Fillets is the bulk fresh bag: open it, portion into meal-size bags, freeze what you will not cook in three days. 5kg Frozen Chicken Breast Fillets is the frozen 5kg: it arrives ready for the freezer and you pull fillets as you need them. Both belong with meal-preppers, families, and anyone tracking protein who will eat chicken most days. They do not belong with a couple who cook breast once a week and then fancy sausages. Shop 5kg chicken breast only with a roll of freezer bags in the drawer. Portion on arrival. Label the date. That is the whole method, and it is why bulk breast is either the best buy in the shop or a bag you regret.
Portioning the 5kg without wasting it
On the day a 5kg bag lands, divide it into 500g or 1kg bags before it goes anywhere near the freezer as a single lump. A frozen 5kg brick is how people give up and order a takeaway. Flatten the bags so they thaw overnight. Keep one 1kg in the fridge for the next two days. That ten-minute job is the difference between bulk breast being a bargain and bulk breast being a guilt slab at the bottom of the drawer. If you will not portion it today, buy the 1kg instead and stop pretending the big bag is a personality trait.