Boisdale of Bishopgate in London, UK officially added what they are touting the “world’s most expensive omelette” to their menu, priced at £90.

This high-priced omelet, called the “Boisdale Omelette” has been much hyped due to its main ingredient: gulls’ eggs.

The eggs come from the black-headed gull found in the wetlands of the northern region of England. Speckled blue and green, the eggs are slightly larger than hen eggs and are known to have a much richer flavor. Gull’s eggs are extremely rare and only stay in season for a few weeks during late spring. Only about 40,000 are sold each year.

Gulls’ eggs are a prime example of chef, Neil Churchill’s, goal in creating this culinary delicacy: to use only the best local and seasonal ingredients. The Boisdale Omelet is created using native Hebridean Blue Lobster, West Minch cock crab, wild garlic, Wye valley new season asparagus & Piedmont summer truffles.

Taking advantage of the limited season, the restaurant has added several other items to the menu that also incorporate gulls’ eggs. One stand-out dish includes coddled eggs served with spring morels, Wye Valley asparagus, duck hearts and woodland herbs.

“They have a magnificent flavor, make an incredibly light a fluffy omelet and are ridiculously expensive,” said Ranald Madonald, proprietor and founder of Boisdale. “I am delighted to be able to offer our customers this rare culinary experience for a very short period of time.”

Madonald plans to keep the items on the menu just as long as 2010 the season lasts.

[Boisdale]