Why 'make a list' is useless advice
Every article about saving money on groceries tells you to make a list, buy store brands, and avoid shopping hungry. These aren't wrong — they just aren't useful to anyone who's read a grocery tips article before. The instruction 'not generic advice like make a list' forces the AI into genuinely specific territory: unit price comparisons between package sizes, which produce items are cheapest frozen vs. fresh by season, how to use the store's own app to find unadvertised markdowns, and how to structure a shopping trip to avoid backtracking through high-impulse aisles. These are the tactics that actually move the number.
The store you shop at changes the strategy
Saving money at Whole Foods and saving money at Walmart require completely different tactics. At a premium grocer, the strategy focuses on the store brand, the bulk bins, and knowing which items are genuinely competitive versus which are markups. At a discount grocer, the strategy is about understanding the markdown schedule, the damage-item bin, and which categories they're actually cheapest on versus which are just reputationally cheap. Naming your store makes the output specific enough to use.