To represent the high food spenders on this board, I'm offering our 2 adults, who consistently spend about $600-650/month, not including eating out (another couple hundred dollars for my husband, almost nothing for me), pet supplies, or booze (which used to add about 175$/month, but I gave up drinking last year and my husband cut down a bit without the 'encouragement' of me drinking, so that's probably 40-50$/month now.
After seeing all these very low numbers people post on this board, I spent about a year tracking/keeping price book/going to different stores /hitting sales, trying to get somewhere in the range of what most people here report. I was able to cut about 150$ off our overall spending, and the habit of stocking up during meat sales has stuck long term. But overall, I honestly found that it wasn't worth it to me for the mental effort and the additional trips to stores/types of stores we ended up shopping at.
I have quite a few food restrictions, and many of our habits we simply aren't willing to change (e.g., wild caught Pacific salmon about 6x per month). We aren't going to start eating darker, fattier, cheaper meat; we don't eat a lot of cheap carbs; we're going to eat salads with a million ingredients all year regardless of the season, my husband eats Lindt dark chocolate for dessert, etc.
Oh, and I really dislike cooking, though I'm perfectly adequate at it. Luckily, I'm also pretty opposed to eating out as a regular activity, so I try to stick to a limited rotation of meals that we know we like and that I can prepare quickly without thinking too much or feeling too irritable about 'kitchen time'. So I'm not inclined to experiment with bulk cooking and such, at least not while I'm still working. Maybe when we're retired.
So, yeah. Our consumables bill is ALWAYS considerably bigger than our mortgage, month in and month out. It's definitely our biggest expense in life. After making an effort to cut the bill, I've definitely concluded it mostly isn't worth the effort (for us). We have no trouble affording it, so I don't worry about it. I'd rather cut elsewhere (and have).