When I have time to really go all out- I go around to many different locations to buy up my food items. Below is a list of my favorite places and why:
For Raw Meat:
Definitely, hands down, Boucherie Centrale on 2 rue Grenette in the 2ème arrondissement. Ran by a father-son duo in a tiny little open shop the quality of the meat is very high. I ordered a deux tranches de Mortadelle for a snack and it had the most amazing taste. Their products are high quality and always delicious as well as 'normal' in price.
At the marché st. Antoine: On Saturdays at the marché st. Antoine on the quai there is a laitière and fromage vendor who sells the best products I've ever tasted... I don't remember the name but it's near the end of the market towards the North side, one of the last cheese sellers... they have a crême fermière that tastes like a buttery creme fraiche. Try also their fromage chèvre cremeux. Their eggs are also produced from 'les poulets heureux'... and for only 1.40 e for 6 eggs.
At a Fromagerie on 54(ish) rue de la Charité in the 2ème: My other favorite cheese place, they have many Lyonnais cheese specialties- such as the St. Marcelin for only 4 euro.
Le Garçon Boulanger on 37 rue de la Charité makes the best baguette I have ever eaten. Made freshly every day, each baguette is different than another and they are often tossed into a pile in a basket. They are specialized in levain and bio products- for the same price as other boulangeries.
Either the marché, or I go to Bails Distribution in the 7ème... they are the suppliers for most restaurants in Lyon and the quality is very high.
Definitely Cap Epices on 39 rue de la Charité, just walking in is like getting into a haven of spices. The owner is very kind and knowledgable on the product and the prices are cheaper than grocery stores with a better selection. They have any kind of spice you can think of, spice mixes available in store and teas.
Such as canned foods, milk, etc, I usually purchase from the U-Express on 28 rue de la Charité- as their prices are normal and not reflected at "city prices".
For American/British Products:
Easy... Little Britain in the 6ème. They have a variety of foreign items, especially the ones that I tend to crave (such as Dr. Pepper or Wheaties). Great stop for vegetarian items as well.
It's not the most luxurious place in Lyon, but I really love Bons Vins de France... it's sort of a mix between the round toothless guy and the fact I can buy a litre of their homemade product for only 1.40 euro.. love it.
For Frozen Foods:
Obviously, Picard, who is a national chain that creates high-quality frozen items at moderate prices. It's like walking into a frozen food paradise.
For Exotic Foods:
Any of the asian markets in Guillotière has cheap rice, cheap coconut milk and high quality imported goods at a cut of the prices.
That about wraps it up for my food places- it's quite a list... but I love shopping for fresh