McDonald's Canadian PR firm has been on their A-game lately, the most recent example being an attempt to prove that their chicken nuggets are made from actual chicken. Interested in seceing what work they've brought to the table thus far, we stumbled upon a video they released back in June 2013 titled ""What is in the sauce that is in the Big Mac?"

Apparently the question was conveniently posed by a Christine H. In response, Dan Coudreaut, the chain's executive chef, demonstrates how to make the crackalicious sauce -- as well as the rest of the burger -- at home. Set in a super casual kitchen setting, the chef proceeds to peel off his uniform down to a super casual plaid shirt. He then sets about to chopping up and cooking ingredients found at your local grocery store. The end result is a homemade burger that bears a striking resemblance to the fast food Big Mac.

It's enough to convince you that Big Mac's are made from wholesome, farm-fresh ingredients.

Well, almost. Here's a breakdown of the "homemade" vs the "fast food" ingredients that go into a US and Canadian Big Mac.

Homemade Big Mac Ingredients

• Mayonnaise
• Sweet Pickle Relish
• Yellow Mustard
• White Wine Vinegar
• Garlic Powder
• Onion Powder
• Paprika
• Onions
• Lettuce
• Hamburger Pickles
• Packaged Sesame Bun
• 100% Beef seasoned with salt and pepper

_____

Fast Food Big Mac Ingredients

US Version

• Big Mac Sauce: Soybean Oil, Pickle Relish (Diced Pickles, High Fructose Corn Syrup, Sugar, Vinegar, Corn Syrup, Salt, Calcium Chloride, Xanthan Gum, Potassium Sorbate [Preservative], Spice Extractives, Polysorbate 80), Distilled Vinegar, Water, Egg Yolks, High Fructose Corn Syrup, Onion Powder, Mustard Seed, Salt, Spices, Propylene Glycol Alginate, Sodium Benzoate (Preservative), Mustard Bran, Sugar, Garlic Powder, Vegetable Protein (Hydrolyzed Corn, Soy and Wheat), Caramel Color, Extractives of Paprika, Soy Lecithin, Turmeric (Color), Calcium Disodium EDTA (Protect Flavor).
• Shredded Lettuce
• Onions
• Pickle Slices: Cucumbers, Water, Distilled Vinegar, Salt, Calcium Chloride, Alum, Potassium Sorbate (Preservative), Natural Flavors (Plant Source), Polysorbate 80, Extractives of Turmeric (Color).
• Big Mac Bun: Enriched Flour (Bleached Wheat Flour, Malted Barley Flour, Niacin, Reduced Iron, Thiamin Mononitrate, Riboflavin, Folic Acid), Water, High Fructose Corn Syrup and/or Sugar, Yeast, Soybean Oil and/or Canola Oil, Contains 2% or Less: Salt, Wheat Gluten, Calcium Sulfate, Calcium Carbonate, Ammonium Sulfate, Ammonium Chloride, Dough Conditioners (May Contain One or More of: Sodium Stearoyl Lactylate, DATEM, Ascorbic Acid, Azodicarbonamide, Mono and Diglycerides, Ethoxylated Monoglycerides, Monocalcium Phosphate, Enzymes, Guar Gum, Calcium Peroxide), Sorbic Acid (Preservative), Calcium Propionate and/or Sodium Propionate (Preservatives), Soy Lecithin, Sesame Seed.
• Pasteurized Process American Cheese: Milk, Cream, Water, Cheese Culture, Sodium Citrate, Contains 2% or Less of: Salt, Citric Acid, Sodium Phosphate, Sorbic Acid (Preservative), Lactic Acid, Acetic Acid, Enzymes, Sodium Pyrophosphate, Natural Flavor (Dairy Source), Color Added, Soy Lecithin (Added for Slice Separation).
• 100% Pure USDA Inspected Beef: seasoned with salt and pepper.

Canadian Version

• Big Mac Sauce: Soybean Oil, Relish, Prepared Mustard, Water, Frozen Egg Yolk, Vinegar, Onion Powder, Salt, Mustard Flour, Xanthan Gum, Potassium Sorbate, Spices, Garlic Powder, Hydrolyzed Plant Protein, Color, Calcium Disodium EDTA
• Lettuce
• Dehydrated Onions
• Pickle Slices: Cucumbers, Water, Distilled Vinegar, Salt, Calcium Chloride, Postassium Sorbate, Potassium Aluminum Sulphate, Natural Flavors, Polysorbate 80, Extractives of Tumeric
• Big Mac Bun: Enriched Wheat Flour, Water, Sugar and/or glucose-fructose, Yeast, Vegetable Oil, Salt, Sesame Seeds, Calcium Sulphate, Calcium Propionate, Monoglycerides, Enzymes, Azodicarbonamide, BHT, Sodium stearoyl-2-lactylate, Wheat Starch, Calcium Peroxide, Wheat Gluten, Sorbitol, Dextrin, Malted Barley Flour, Ascorbic Acid, Citric Acid, Calcium Stearate, Calcium Iodate, Silicon Dioxide and "may contain any or all of the following in varying proportions: diacetyl tartaric acid esters of mono and diglycerides."
• Processed Cheese Slice: cheese, modified milk ingredients, water, sodium citrate and/or sodium phosphate, salt, potassium sorbate, citric acid, soy lecithin, color.
• 100% Pure Beef Patty: seasoned with salt, spice, sunflower oil

It's important to know that while the homemade version's ingredients appear significantly different from the fast food version, what goes into your "Big Mac" or any burger for the matter depends on the ingredients you choose. The jarred pickles your grab at the grocery store could be loaded with just as many hard-to-pronounce chemicals found in the fast food version, so make sure to read the label. Conclusion: Choose wisely. Eat wisely.