The cost of lettuce is spiking amid a shortage that含羞草研究社檚 leading some restaurants to temporarily stop offering leafy greens on their menus.

Wholesale produce distributors say demand is exceeding supply of iceberg and romaine lettuce, and pricing pressures are expected to continue throughout the month.

Restaurants Canada COO Kelly Higginson said a major lettuce-growing area in California was hit by some kind of virus, after a year that含羞草研究社檚 already been rife with difficulties thanks to heat and drought.

含羞草研究社淭hat particular area has had crops decimated. So there含羞草研究社檚 a massive shortage,含羞草研究社� said Higginson.

From fast-food joints to fine dining establishments, 含羞草研究社渆verybody含羞草研究社檚 just pulling lettuce off the menu,含羞草研究社� she said.

That含羞草研究社檚 because not only is lettuce in short supply, but the available product has in some cases quadrupled in price, she said.

含羞草研究社淭here含羞草研究社檚 no room for these restaurants to absorb more costs 含羞草研究社� and somebody is only going to pay so much for a salad. So once the price gets to a certain point, they含羞草研究社檙e just gonna have to take it off the menu,含羞草研究社� said Higginson.

Fast-food chain Subway said lettuce is temporarily unavailable at some of its restaurants, and anticipates supply will improve in late November.

In a tweet last week, Swiss Chalet含羞草研究社檚 Canadian division said due to the industry-wide shortage, its garden and Caesar salads are not available, and items that normally contain lettuce, like burgers, will come without lettuce for the time being.

Higginson said events like this have become more common in the past few years, leading some restaurateurs to offer smaller menus or use seasonal produce to try and avoid the impacts of supply inconsistencies.

She said if a large number of restaurateurs pivot to other greens like spinach or kale, prices of those products could also rise.

Rosa Saba, The Canadian Press

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