What does luxury taste like? Well, it tastes expensive—very expensive. The most exquisite ingredients in the world can reach astronomical prices. These ingredients' scarcity and exclusivity make them highly sought after foods by those who look for the finer things in life, and, of course, are prepared to pay for them.

From caviar to truffles, there are a number of very expensive foods we're familiar with. But did you think that all pizzas and burgers were cheap? Well, not quite. Click through the following gallery and discover the world's most expensive foods.

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White truffle - Native to the Piedmont region of Northern Italy, this fungus is an expensive delicacy. In 2007, a Macau casino owner paid US$330,000 for a 1.5 kg truffle.

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Oysters - You can find decently priced oysters in some parts of the world, but they're still quite pricey.

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Saffron -

Also known as 'red gold,' saffron is the world's most expensive spice. It takes thousands of flowers just to create 1 kg of saffron.

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Jeong Hong-Yongto's Christmas cake -

It took a month for pastry chef Jeong Hong-Yongto to create a fruitcake containing 223 diamonds. The cake is on display in Tokyo and priced at US$1.7 million.

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La Bonnotte potatoes - These potatoes get their unique flavor from the seaweed in the soil they're grown in and from the climate of Noirmoutier Island in France. The price? Around US$860 per kilogram.

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Snow crab - On November 7, 2019, a snow crab was auctioned off in Tottori, Japan for 5 million yen (US$46,000).

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Wagyu beef - There's a reason why this Japanese beef is so delicious. Cows are treated really, really well. A special diet, daily massages, and brushing result in high-quality beef. Expect to pay around US$50 for 100 grams.

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Foie gras - This expensive pate is made from fattened duck or goose liver. The animals are force-fed, which has led to the product being banned in some countries. Expect to pay around US$50 per kilogram.

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Iberico ham - This cured ham is only produced in Spain and Portugal. As of March 20, 2016, the Guinness World Record for the most expensive leg of ham was €4,100 (about US$4,500).

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Almas Caviar - This rare and expensive beluga caviar has been sold at a whopping US$34,500 per kilogram.

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Black Diamond ice cream - Scoopi Cafe in Dubai sells the world's most expensive ice cream. US$817 will buy you Madagascar vanilla ice cream topped with truffles, saffron, and gold flakes. Plus, it's served in a Versace bowl!

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Louis XIII pizza - But the world's most expensive pizza was created by Renato Viola. It had the most exquisite ingredients, including three different types of caviar. And the price tag? US$12,000.

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Thanksgiving at Old Homestead Steakhouse - You can eat what is probably America's most expensive Thanksgiving dinner at the Old Homestead Steakhouse in New York City. Expect to pay US$76,000.

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Fence Gate Inn meat pie - You can buy a slice of this pie for around US$1,781 at the Fence Gate Inn in Lancashire, UK. Wagyu beef, matsutake mushrooms, and black truffles are just some of the ingredients.

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Bluefin tuna - This can cost anywhere from US$20 to $200, depending where the fish is from. In 2009, a bluefin tuna was auctioned off at a Tokyo market for $3 million.

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Densuke watermelon - The Japanese have a taste for expensive food. One of these was once sold at auction for US$6,100.

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Vanilla - Contrary to cheaper imitations, real vanilla from Madagascar is expensive, at over US$500 per kilogram.

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Matsutake mushrooms - Expect to pay between US$1,000 and $2,000 for half a kilogram of this delicacy.

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Yubari King melons - These Japanese melons can cost around US$200 each, but in May 2019, two melons were sold at auction for over US$45,000!

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Le Burger Extravagant - US$295: this is how much you'd pay for a Wagyu beef burger topped with extravagant ingredients such as black truffles and caviar. You can also find these at New York's Serendipity 3.

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Kopi Luwak coffee - A kilogram of this coffee will set you back around US$700. Coffee beans are eaten and then defecated by the Asian palm civet or civet cat, and the digestion process apparently gives the coffee beans a distinctive flavor. We bet!

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Bird's nest soup -

These are made with swiftlet nests. They're essentially made of solidified bird saliva. The price tag? Around US$30 to $100 for a bowl of soup.

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Moose cheese - Made from moose milk, this Swedish delicacy can set you back as much as US$1,000 per kilogram.

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Quintessential Grilled Cheese - Serendipity 3 in New York City serves a very special grilled cheese sandwich. Bread soaked in champagne, rare Italian cheese, and gold flakes push the price up to US$214.

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Pizza Royal 007 - Domenico Crolla created one of the world's most expensive pizzas, which was sold for US$4,200. From lobster marinated in cognac, to Dom Perignon soaked caviar, this pizza is truly extravagant.

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Grand Velas Los Cabos taco - How much for a taco with Kobe beef, Almas Beluga caviar, black truffle, and a gold-infused tortilla? US$25,000. You can try one at Grand Velas Los Cabos Resort in Mexico.

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Marc Guilbert's chocolate dessert - In 2011, chef Marc Guilbert served a truly extravagant chocolate dessert at a hotel in the UK. It was sold at £22,000 (around US$28,201).

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Tullibardine Whiskey (1952) -

Only one barrel was created in 1952, which means that only 70 bottles of these were made. The price for this rare whiskey? US$41,000.

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Acqua Di Cristallo Tributo a Modigliani -

The world's most expensive bottle of water can be yours for US$60,000. It's covered in 24-karat gold, and its design is truly remarkable.

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The world's most expensive foods -