Food prices typically lag behind commodities by about ten months, if that held true we can expect to see a massive jump in food prices in the near future. It depends though, after the last oil shock companies are much more willing to adjust the price of food instead of trying to keep prices stable and eat the cost of temporary spikes in prices which would dramatically shorten the amount of time you'd expect for that 5-8% market correction. Canada's expecting something like a 6-7% inflation rate just for food in 2011 which is reasonably above the level of inflation and I'd bet something that won't drop anytime soon. You take the wheat crisis in China, the oil speculations due to the middle east, Japan suddenly wanting to import a bunch of food and the probably overvalued Canadian dollar and I would really doubt the food market will correct itself.
Warning: I'm quite drunk so I'm not sure how well that turned out.
That seems pretty much right from what I can tell.
Food prices for US typically lag behind commodities by about ten months to a year as we're so far removed from the factor resources, but to much of the world they have a far more immediate reaction; especially to soft commodity prices - agricultural goods. Some of which have spiked 50-100% in the last year. This has lead to a level of panic (reducing exports/hoarding) and soft commodity speculation which has/will further serve to drive the prices up. Goods on the grocer's shelf haven't really reflected this up to this point because wholesalers and retailers HATE increasing prices without collusion. The increased soft staple resource prices and increase energy prices are forcing their hands basically. The price increase we can expect to see over the next year is almost a market correction in itself. Once the price of, say, Starbucks coffee goes up, I don't imagine it'll be going back down. I do, however, imagine that the price of coffee bean futures will correct itself. Actually, coffee might be a bad example...use wheat instead. Where we see the effect of that correction is in a higher margin for both wholesalers and specifically sellers to freeze prices. Being as far removed from the resources as we are, we don't actually see a lot of the smaller price spikes in soft commodity prices, which is probably the one benefit of living in a system where prices rarely go down. Wheat prices can fluctuate rapidly, thank god bread doesn't. The issue we're seeing now, compared to when oil prices usually spike is that energy AND soft commodity prices have been rising for a variety of reasons, compounding the increase. Which, again, makes commodity market speculation potentially very lucrative.
As for the 6-7% food price increase, the inflation rate may or may not be drastically affected. The CPI which the inflation rate is based off of considers a wide variety of goods - it's not unusual for a drastic increase of one category to be a fair amount over and above the overall level of inflation. I think that food prices only make up 15% of the CPI in Canada.