At virtually every link in the nation’s food chain, the cost of oil is pushing expenses ever higher.
Retail bills for some food staples have risen at least 20 percent since 2006, and they probably will continue their upward march. A gallon of gasoline could cost $7 within the next two years, some analysts say.
“If you double the price of oil, I would assume that food would at least double, and it might be more because the cost of oil gets magnified in the food chain,” said Milt McGiffen, a vegetable specialist for the University of California cooperative extension in Riverside County.

SCOTT LINNETT / Union-Tribune Nancy Owens Renner of Ocean Beach expanded her backyard garden last winter in an effort to offset rising food and fuel prices. “I am thinking about how to maximize production in my yard,” Renner said.
By the numbers:
Price increases between May 2006 and May of this year:
53% – Eggs
25% – Bread
25% – Rice
19% – Milk
14% – Coffee
11% – Chicken
Source: Bureau of Labor Statistics
Farmers are paying more money to fill their tractors with diesel for planting and harvesting. They also spend more for fertilizer, pesticides and plastic packaging, most of which are petroleum-based.
When the food is stored and processed, it takes a huge amount of energy, which is linked to the price of fossil fuels as well.
Then, products are shipped using diesel trucks and rail cars that are far costlier to run now than in years past.
The result is bigger and bigger food bills that are causing financial hardship for millions of Americans.
Read moreIf the price of oil doubles, food prices will at least double