Most dictionaries define a hamburger as “a flat round cake of minced beef, fried or grilled and typically served in a bread roll garnished with various condiments.” This dish, which (nobody knows why) is celebrating its day today, is constantly broadening its definition to attract more followers.

The hamburger, a classic that’s often associated with American food but whose origin is quite vague has evolved to now include options made with fish or vegetables and can be found on tables all over the world.

The most “chic” gourmet restaurants, classic fast food chains, supermarkets and the popular food delivery service to your doorstep, all ensure it’s ever-present everywhere.

Spaniards spend almost 300 million euros a year on hamburgers in supermarkets, and according to figures from the Nielsen Consulting Group, this is going to increase, given that the market has grown by 14% this year with data available until April of this year.

Beef burgers are the number one favourite when eating at home, which represents a cost of 107.5 million euros; although pork burgers are the ones gaining most presence and their market share has grown at a rate of 58.3% in value.

Chicken burgers are also evolving positively on the shop shelf, with people spending 25% more on them, and the veggie alternatives – with a total budget of 42,900 euros – continue to climb (17%).

Plant-based meat and vegetable products with a similar taste and texture are another alternative generating followers and business in the global market.

Earlier this month, the world leader in plant based “meat” products, Beyond Meat, made its debut on the Wall Street Stock Exchange and rocketed 163% to $65.75 for each share after starting at $25.

People are also ordering more ready to eat, take-home burgers: according to Deliveroo, 30% of the orders in Spain are for hamburgers, mainly meat, cooked in the traditional American or gourmet style.

However, they said, “orders for other types of burgers like chicken or vegan are growing steadily.”

And curiously, November is the month when most people order hamburgers, especially on weekend nights.

In the case of Just Eat, the humble hamburger moved up one place to the fifth most ordered dish in 2018, just below spring rolls, three delights rice, French fries and “bravas” potatoes.

Since its inception, the hamburger has always been made from minced meat, but now it’s fusing with current trends such as the tuna burger bao with chives, mustard and soy sauce, created by the Hernández brother in the Latasia restaurant in Madrid.

Pork rib burgers with roasted spinach and crispy bacon are also available at the “Porcinería” restaurant, also in Madrid.

The top five rated burger bars in the country by users of the booking platform, in descending order, are Mad Grill and the Bistroteca in Madrid; Jacks Smokehouse in Marbella; Depikofino in Seville, and the Hard Rock in Valencia.

The offer is wide and varied for Hamburger Day, with plenty of promotion to entice burger lovers, and according to all the data, doesn’t need an onomastic to remain a favoutite in everyone’s diet… in one way or another.