Will Your Next Taco Contain This Secret Ingredient?

Will Your Next Taco Contain This Secret Ingredient?

There’s some crazy meat industry propaganda video waiting to be made where a buff jock takes a bite out of a hamburger served by a polite waiter, who then rips off a mask to reveal the demented face of someone from the mushroom industry shouting, “That burger is 50 per cent mushrooms!” after which the customer drops the burger in horror, and dies. If you make this video, please send it to me.

Image: USDA/Flickr

Anyway, by this point, “meat is bad” is a view held by numerous folks in science, health and tech. Whether or not you agree, scientists are pressing forward with alternatives that still convince the consumer that they’re eating a one hundred per cent grade-A mutilated carcass. You’re probably aware of groups pursuing plant-based meat substitutes, or those growing meat from culture. But one (mushroom industry-funded) group of researchers, thinking mainly about meat’s nutrition, is wondering whether they can replace just some of the beef, in this case with mushrooms.

And the meat-mush hybrid reportedly turned out pretty similar to the real thing: “Results showed that a formulation containing up to 45% mushrooms can be integrated into beef fillings using un-blanched, white button mushrooms with small grind (1 to 5mm), which maximized mushroom usage while minimising differences from the all-meat control,” the University of Massachusetts team wrote in a paper published today in the Journal of Food Science.

Again, plenty of folks tried to swap meat with some plant-based filler, such as wheat or soy. Others have tried to create mushroom-meat crossovers, like Sonic, which tested a part-mushroom burger earlier this year. Another group studied a proof-of-concept mushroom-meat mix in 2014. This time, the UMass group’s attempt consisted of a taco meat recipe with beef, onion, tomato paste, garlic and spices, with various amounts of chopped button or portabello mushrooms substituted for ground beef. The researchers determined that they could swap around 45 per cent of the beef with button mushrooms in the taco meat “without dramatically changing its properties”.

But what do the tasters think? The researchers performed tests on groups of students. They first found that, out of 159 students, 83 preferred the control while 76 preferred the mushroom formulation (though they did not mention in the study whether participants knew which sample they were getting or not). In another trial, the researchers compared a high salt and low salt version of the mushroom meat mix, and found that 100 preferred the low-salt, while 55 preferred the regular amount of salt. It turns out the umami flavour from the mushroom’s MSG could have made up for the salt, and allowed the researchers to create a lower-sodium, still-tasty taco beef-mushroom hybrid.

There are reasons to be sceptical. This is just one study, and the tasters in both trials were all in their teens or 20s; who knows how this might have affected the results. Additionally, the study was funded by the US Mushroom Council and Australian Mushroom Growers Association which could introduce bias, since industry groups have desired outcomes in research (although as I’ve written in the past, that’s frequently just the way food science goes). I reached out to other experts for further comment, but had not heard back at time of writing.

But more importantly, other research has called into question how bad salt and fat actually are for our health, yet these were the main motivations behind the new study’s attempt to replace beef with mushrooms. At least one 2011 meta-analyses, or review of other reviews, found “no strong evidence that cutting salt intake reduces the risk for heart attacks, strokes or death in people with normal or high blood pressure,” as reported by Melinda Wenner Moyer for Scientific American. Reviews have even cast doubt on saturated fat’s role in poor health.

Health aside, there are other reasons to cut down on processed meat, such as greenhouse gases emitted by cattle, or the overhyped but still present potential risk for certain cancers, and generally researchers recommend cutting meat down to 70g or less per day.

It’s certainly unclear what the future of meat might look like, but just know you will continue to see scientists work really hard to make things that are not cows look, taste and bleed like cows.


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