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Big Mac

Big Mac is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Big Mac rather than just read about it. In short: The Big Mac is a brand of hamburger sold by the international fast food restaurant chain McDonald's. It was introduced by a Greater Pittsburgh area franchisee in 1967 and expanded nationwide in 1968, and is regarded as McDonald's flagship product.

Big Mac — main illustration
Big Mac — illustration

Key takeaways

  • Big Mac belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Big Mac to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Big Mac from memory before moving on to harder problems.

Reference excerpt

The Big Mac is a brand of hamburger sold by the international fast food restaurant chain McDonald's. It was introduced by a Greater Pittsburgh area franchisee in 1967 and expanded nationwide in 1968, and is regarded as McDonald's flagship product. The hamburger features a three-slice sesame-seed bun containing two beef patties, one slice of cheese, shredded lettuce, pickles, minced onions, and "special sauce" similar to thousand island dressing. Seasonal and regional variants have been offered, including chicken versions. The Big Mac is known worldwide and often used as a symbol of American capitalism and decadence. The Economist has used it as a reference point for comparing the cost of living in different countries – the Big Mac Index – as it is so widely available and is comparable across markets.

History The Big Mac was created by Jim Delligatti, who stated later he did not invent the Big Mac but merely copied the double deck hamburger marketed by the Big Boy hamburger chain since the 1940s. Delligatti operated several McDonald's restaurants in the Pittsburgh area. It was created in the kitchen of Delligatti's first McDonald's franchise, located on McKnight Road in suburban Ross Township. The Big Mac debuted at the McDonald's owned by Delligatti in Uniontown, Pennsylvania, on April 22, 1967, selling for US$0.45 (equivalent to $4.35 in 2025). It was designed to compete with Big Boy Restaurants' Big Boy hamburger. Eat'n Park was the Pittsburgh area's Big Boy franchisee at the time. The Big Mac proved popular and it was added to the menu of all U.S. McDonald's restaurants in 1968. The Big Mac had two previous names, both of which failed in the marketplace: the Aristocrat and the Blue Ribbon Burger. The third name, Big Mac, was created by Esther Glickstein Rose, a 21-year-old advertising secretary who worked at McDonald's corporate headquarters in Oak Brook, Illinois.

Product The Big Mac is made with two 1.6 oz (45 g) beef patties, a "special sauce" (similar to Thousand Island dressing), shredded iceberg lettuce, one processed American cheese slice, two slices of dill pickle, and minced onions, served on a three slice sesame seed bun. In October 2014, McDonald's released a behind-the-scenes video as part of its "Our Food. Your Questions." transparency campaign, with former MythBusters co-host Grant Imahara touring a Cargill facility to explain how the company's U.S. beef patties are made. On October 1, 2018, McDonald's announced that it would remove all artificial preservatives, flavors, and coloring from the Big Mac.

Sauce In the past, Big Mac Sauce was delivered to McDonald's restaurants in sealed canisters designed by Sealright, from which it was directly dispensed using a calibrated "sauce gun" that would dispense a specified amount with each pull of the trigger. In 2023, McDonald's introduced a new dispenser that uses soft bags of sauce and a plunger to compress the bag with a ratchet system. The new dispenser is also used for McChicken Sauce and tartare sauce. In 2012, McDonald's executive chef Dan Coudreaut released a YouTube video revealing the recipe of the sauce. It consists of store-bought mayonnaise, sweet pickle relish and yellow mustard whisked together with vinegar, garlic powder, onion powder and paprika. In 2018, McDonald's removed potassium sorbate, sodium benzoate, and calcium disodium EDTA from the sauce. The sauce is occasionally available for purchase for a limited time. The first time was in 2015. A 25 ml (0.85 U.S. fl oz) tube was available for purchase but only in restaurants in Australia. It was available again in 2020. A 50 ml (1.7 U.S. fl oz) pot was available for purchase but only in restaurants in the UK and Ireland. In 2023 and early 2024 it was available in Hungary. McDonald's Australia offers a "portion cup" of Big Mac Sauce as part of its regular menu.

Packaging The Big Mac was first served inside a collapsible square cardboard container with a circular piece of cardboard placed around the hamburger to hold it together. The cardboard container that was changed to a "clamshell" style, polystyrene foam container in the late 1970s. Polystyrene foam containers were phased out beginning in 1990, due to environmental concerns.

Advertising

"Two all-beef patties" jingle In 1974 McDonald's commissioned an advertising jingle which popularized the list of ingredients of the Big Mac: "Two all-beef patties, special sauce, lettuce, cheese, pickles, onions on a sesame-seed bun." In 2008 McDonald's restaurants in Malaysia revived the slogan. The revival included the original prize of a free Big Mac if the customer was able to recite the slogan in under four seconds. It was released in May, along with the promotional Mega Mac, which had four beef patties instead of two.

McDonaldland character

McDonald's began a television advertising campaign appealing to children in 1971 featuring a fantasy world populated by Ronald McDonald and various mascots promoting McDonald's products. Some characters were also modeled in McDonald's store playground equipment. The Big Mac was represented by Officer Big Mac, a Keystone Cops-style policeman with a giant Big Mac sandwich for a head. The characters were revised after a 1973 plagiarism lawsuit brought by television puppeteers Sid and Marty Krofft because of similarities to their H.R. Pufnstuf characters. A modified Officer Big Mac continued in the commercials until 1985.

Hip-hop product placement In 2005 McDonald's began offering product placement rewards to hip hop artists who namechecked the Big Mac in their music, giving US$5 to the artist for every time a song mentioning the hamburger was played on the radio.

… excerpt ends here. Continue reading the full article.

Illustrations

Big Mac illustration
Big Mac: McDonald's playground Officer Big Mac climb-in jail
McDonald's playground Officer Big Mac climb-in jail
Big Mac illustration
Big Mac illustration
Big Mac illustration

Worked examples

Example 1 — a first encounter with Big Mac

Start with the simplest possible case. Write down what Big Mac claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Big Mac before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Big Mac ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Big Mac

In research
Big Mac appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Big Mac in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Big Mac is common in secondary-school and first-year university syllabi. It links to neighbouring topics Fast food hamburgers, History of Pittsburgh, McDonald's foods, so understanding it makes those chapters shorter.
In everyday life
Look for Big Mac outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Big Mac in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Big Mac means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Big Mac out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Big Mac in simple terms?

The Big Mac is a brand of hamburger sold by the international fast food restaurant chain McDonald's. It was introduced by a Greater Pittsburgh area franchisee in 1967 and expanded nationwide in 1968, and is regarded as McDonald's flagship product.

Why does Big Mac matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Big Mac?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Big Mac.

Tags

  • Fast food hamburgers
  • History of Pittsburgh
  • McDonald's foods
  • Products introduced in 1967

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