We spend $120-$140pw or $500 a month for two adults and a boy 8 and girl 3. It varies mainly by the cost of the ingredients, many things vary quite a lot, like zucchini is anything from $2 to $6 a kg.
Breakfast is eggs or tuna for my wife, oats for me, and weetbix for the kids. Everyone has 2+ pieces of fruit a day, and most of us have yoghurt each day.
I do dinner menus, using the Australian Dietary Guidelines to guide me. Currently it's,
Monday - beef chilli
Tuesday - pumpkin soup
Wednesday - chicken curry
Thursday - vegie/lentil soup
Friday - roast, rotating through chicken, lamb, beef and lasagna
Saturday - typically leftovers from one of the other nights, otherwise bolognese, or tuna pasta
Sunday - I work all day and my wife's home then, so it's her choice and tends to be either pizza or stirfried rice
On some of the soup days my wife and sometimes I will have fish, too or instead. I make extra dinner and that's lunch for my wife at her office, or for my son at school. My daughter has either some dinner leftovers, or more commonly bread and butter, some fruit and milk for lunch.
We drink wine, but usually it's just a glass each on Friday night.
Once or twice a week we'll have dinner guests, especially on Fridays.
I buy things in bulk - like rice - so that's part of the variation, eg buying a big tin of olive oil every 2-3 months. The weekly shopping looks something like this,
Vegetables, 8kg
Fruit, 7kg
Beef mince 1kg, [/size]chicken for roasting 2kg, white fish or salmon 1kgPasta/rice/bread, 5kgMilk 6lt, yoghurt 3kg, cheese 1kgfrom the supermarket we get the grains, but also things like tinned tomatoes, kidney beans and lentils, and these boost up the vegetable and (for the legumes) "meat" serves, too. For both health and frugality, if 80% of your spending is at the greengrocers, butchers and fishmongers, you're probably alright. For frugality, use the dry goods shop too, and buy in bulk. And of course, for frugality and to save all those stupid arguments about what to have for dinner, you have a menu. "But I don't want chilli tonight.""Great! What are you making instead?""... I guess I'll have chilli."Arguments about what to eat are stupid, depressing and annoying, and lead to ordering pizza and other unhealthy unfrugal choices.