A branch of supermarket chain Budgens has stacked shelves with the bizarre treat and it is so popular they cannot get enough of it.
Described as a low-fat, high-protein alternative to meats such as beef and pork, grey squirrels cost around £3 each.
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The rodents were popular in Tudor times and Second World War rationing saw the Ministry of Food try, and fail, to sneak squirrel back onto our plates.
However Neil Duggard, manager of Budgens in north London, said: "We're selling out very quickly. Apparently they taste great in casseroles, soups and pies.
"The squirrels are shot in the wild by farmers. They are seen as a nuisances."
Some of Britain's top eateries now offer squirrel, including the Michelin-starred St John in London and The Famous Wild Boar in Crook, Cumbria.
And Cornwall butcher David Simpson's squirrel pasties are selling like hot cakes because people like "local, wild meat".
But actress Jenny Seagrove, 53, a patron of animal rights group Viva, said: "Anyone who cares about wildlife should be appalled at Budgens.
"What gruesome product will be next to grace our food aisles? Blackbird, fieldmouse or mole?"
Here's a summer squirrel recipe from your fur-vourite newspaper...
Barbecued Squirrel
Use 1 squirrel per serving.
Put the whole, de-skinned squirrels in a large pot and boil in salted water for two hours.
Remove meat as it falls from the bone and place on sheets of tin foil glazed with butter and mixed herbs.
Cook low on a BBQ for 30 minutes. Remove meat from tinfoil, brush with BBQ sauce and place directly back on the grill for a final 15 minutes.
Serve with a nutty potato salad.
Squirrel Facts
The hind legs of squirrels are double-jointed.
A male can smell a female in heat up to a mile away.
Squirrels have five toes on their back feet and four toes on their front. The front ones are very sharp.
They can eat their own body weight (1.5lbs) every week.
The rodents can fall up to 100 feet without hurting themselves and use their tail as a parachute.
Squirrels can live up to 10 years in the wild, although the average lifespan is around four.
