We have a bit of complicated strategy, but it definitely helps keeps the food budget down.
We do an online weekly shop, if needed I’ll do a top up mid week (fresh fruit, milk, bread).
We alternate “pay day” shops to either a trip to Costco where we buy bulk items (tea, coffee, mince mea, chicken breast etc) or we go to Savers/Home Bargains and buy household essentials (Detergent, toilet rolls, personal hygiene)
I’m not supermarket loyal, I’ll alternate between Sainsbury’s/Ocado online as in my area they do the most sensible substitutions and Tesco/ASDA for the top up shop, I appreciate Aldi/Lidl would be cheaper but I find the produce doesn’t last.
I know some may read that and think WTF, but in life sometimes you have more money than time and convenience wins and other times you have no money so you have to make time 😂
I find it helps to have an overall food budget for the month then trying to keep to a weekly budget, we split the responsibility in our house, I do the online shop/weekly top up and DH does the monthly trip to Costco or Savers.