A plant-based burger is a patty designed to look, cook, and taste like a traditional beef burger but made entirely from plant-derived ingredients. The core of most plant-based burgers is a protein extracted from peas, soy, wheat, or mung beans, combined with fats, binders, and flavorings that together mimic the texture, juiciness, and browning of ground beef.
What’s Actually in One
Every plant-based burger starts with a concentrated plant protein. The most common sources are pea protein (used by Beyond Meat), soy protein (used by Impossible Foods), and wheat gluten, sometimes called seitan. Some brands also use chickpeas, lentils, quinoa, or mushrooms as a base, though these tend to produce a less meat-like result.
Fat is what gives a burger its juiciness and sizzle. Most plant-based patties use coconut oil, canola oil, or sunflower oil to replicate the marbling effect of beef fat. Beyond Meat’s latest formulation switched to avocado oil to reduce saturated fat. These fats are often mixed with the protein in a way that lets them melt and release during cooking, similar to how beef fat renders on a grill.
Holding everything together requires binders. Methylcellulose is the most widely used one. It’s a plant-derived cellulose that has an unusual property: it firms up when heated rather than melting. During cooking, it forms a gel-like layer inside the patty that locks in moisture and keeps the burger from falling apart. Starches, including potato starch and modified food starch, play a supporting role by absorbing water and adding structure.
Then there are the flavor and color components. Beet juice extract gives many patties their raw-meat reddish hue. Various natural flavors, yeast extracts, and spice blends round out the taste. Impossible Foods takes a more novel approach with a molecule called heme, which is central to why cooked meat tastes the way it does.
How Heme Creates a Meaty Flavor
Heme is an iron-containing molecule found in every living organism, but it’s especially concentrated in animal muscle tissue as part of a protein called myoglobin. When meat cooks, heme acts as a catalyst, triggering chemical reactions that transform simple sugars and amino acids into the complex mix of flavors and aromas people associate with a grilled burger. It’s also what makes raw meat red.
Impossible Foods identified heme as the single most important factor in meat’s flavor profile and found a plant-based version in soy root nodules, where it exists as leghemoglobin. Growing enough soy roots to harvest this protein at scale would be impractical, so the company engineered a yeast strain to produce it through fermentation. The yeast cells are grown in tanks, then broken open so the leghemoglobin can be filtered out and added to the burger mix. The result is a patty that “bleeds” when raw and develops a browned, savory crust when cooked.
How the Texture Is Made
Turning a powdery plant protein into something with the fibrous, chewy bite of ground beef requires a process called high-moisture extrusion. Plant proteins are mixed with water and fed into an extruder, essentially a long, heated barrel with a rotating screw inside. Under high pressure and temperature, the proteins unfold and realign into long, layered fibers that resemble the grain structure of muscle tissue. The result is a base material that can be shaped, seasoned, and pressed into patties. This is the same core technology most major brands rely on to produce their products at scale.
Nutrition Compared to Beef
Protein content is roughly comparable. Most “Beyond Meat-type” burger patties deliver more than 15 grams of protein per 100 grams, which puts them in the same range as an 80/20 beef patty. The difference shows up in the type of fat and the sodium levels.
Saturated fat has been a sticking point. Early formulations relying on coconut oil packed in nearly as much saturated fat as beef. In the largest study of plant-based meat nutrition to date, though, saturated fat levels across the broader market averaged about 2 grams per serving, well below typical beef patties. Beyond Meat’s current formula, for instance, contains 2 grams of saturated fat per serving after reformulating with avocado oil.
Sodium is higher than plain ground beef, which contains very little sodium on its own. A plant-based patty can deliver around 300 to 400 milligrams per serving. Beyond Meat’s latest version comes in at 310 milligrams, roughly a fifth of the American Heart Association’s recommended daily limit of 1,500 milligrams. That’s not extreme for a single food item, but it adds up if the rest of your meal includes cheese, condiments, and a salted bun.
One nutritional trade-off worth knowing: plant-based burgers are classified as ultra-processed foods under the NOVA food classification system. A study examining plant-based meat products in supermarkets found that nearly 94% qualified as ultra-processed, containing long ingredient lists with additives for coloring, flavoring, and binding. This puts them in a different nutritional category than whole plant foods like beans, lentils, or tofu, which deliver protein without the processing. Ultra-processed food consumption has been linked to higher rates of cardiovascular disease and metabolic issues in large population studies, though it’s difficult to isolate the effect of any single product.
The Environmental Case
The environmental footprint is where plant-based burgers differ most dramatically from beef. A life cycle assessment comparing plant-based and beef patties found that plant-based versions carry a 77% smaller climate change burden. When adjusted for nutritional density (accounting for the higher fiber and essential fatty acid content of the plant patties), the advantage grows to 81 to 87% less climate impact per unit of nutrition delivered.
Land use is the starkest difference. Beef cattle require vastly more land for grazing and feed crops, and the gap can be as large as 16-fold depending on where the cattle are raised. Water pollution from nutrient runoff is also significantly lower for plant-based production, with 92 to 95% less marine eutrophication (the process where excess nutrients choke waterways and create dead zones). The one area where plant-based patties don’t win is energy use during manufacturing, where they require about 8% more energy than beef patties due to the industrial processing involved.
To put the scale in perspective: one estimate found that if the UK alone switched from beef to plant-based patties, it could save 9.5 to 11 million tonnes of CO2 equivalent annually, representing up to 2.4% of the country’s total greenhouse gas emissions.
Major Brands and What Sets Them Apart
Beyond Meat builds its burgers around pea protein and recently became the first plant-based brand to earn Clean Label Project Certification with its fourth-generation formula, launched in early 2024. Impossible Foods uses soy protein concentrate plus its proprietary fermented heme. Quorn Foods takes a different approach entirely, using mycoprotein, a protein grown from a fungus through fermentation. Other players include Tofurky (soy-based), Hungry Planet (a blend of plant proteins), and conventional meat companies like Tyson Foods and Conagra that have launched their own lines. Pea protein is currently the fastest-growing segment of the market.
Cooking Tips
Plant-based burgers should be cooked to an internal temperature of 160°F, the same target as a conventional beef burger. This might seem surprising since there’s no raw meat involved, but USDA researchers have found that plant-based patties can harbor bacteria the same way beef does, particularly if they’ve been handled or stored improperly. Use a digital thermometer rather than relying on color, since the beet juice and other colorings in plant-based patties can make it hard to judge doneness by appearance alone. Most brands recommend cooking from frozen or refrigerated (not thawed at room temperature) on a preheated grill or skillet for about 3 to 4 minutes per side.