Here's what we spend, all from Aldi and there are 3 of us. Worked out per person, this is a very typical daily spend:
Breakfast
0.5 banana, porridge, milk - 22.5p
Lunch
Apple, bread, sandwich filling - 80p
Dinner
Roast chicken, veg, potatoes - 115p
Total per person, per day = £2.75
3 people, so = £8.25
+ 0.5 bottle of wine = £10.75 for 1 day for 3 people
= £327/m = £75.50/week for 3 people
= £25/week/person
Oh, and the dog works out at about £0.30/day.
Let's call it £35/week/person, it's still a fraction of the £85. It used to be less, but food still isn't that expensive.