As the keto diet sweeps America, restaurant chains are trying to cash in on the trend.
People adhering to keto diets limit their carbohydrate intake, pushing their bodies to switch into a fat-burning state called "ketosis." That means ditching sugar, wheat, and beans, and cutting back on alcohol. Red meat and cream are encouraged in the high-fat, low-carb diet.
Read more: What a husband and wife who've been on the keto diet for 6 years keep in their kitchen
Sticking with any diet can be a challenge while eating out at restaurants. So, some chains are tweaking the menu to win over people on the keto diet.
Here are five chains that have rolled out keto-diet-approved menu items in 2019.
In January, Chipotle debuted a line of "Lifestyle Bowls," designed to fit in different buzzy dieting trends. The line consists of the Paleo Salad Bowl, the Keto Salad Bowl, the Whole30 Salad Bowl, and the Double Protein Bowl.
The Keto Salad Bowl contains carnitas, romaine lettuce, red salsa, cheese, and guacamole.
Read more: Chipotle is trying to win over paleo, Whole30, and keto dieters with new menu items
Blaze Pizza became the first national pizza chain to roll out a keto-approved option in the US in July. The fast-casual chain's keto crust has just 6 grams of net carbs, swapping flour for ingredients like flax seeds, eggs, and cheese.
"Pizza crusts are traditionally made mostly of flour, water and yeast," Blaze Pizza's executive chef, Brad Kent, told Business Insider. "Removing the flour brings several challenges since the gluten and starches and sugars (carbohydrates) deliver the desirable light, crispy, and chewy texture in addition to its toasty and yeasty flavor."
The chain's keto pizza features the keto crust, spicy red sauce, mozzarella, ovalini mozzarella, bacon, cherry tomatoes, mushrooms, and spinach.
In August, Qdoba rolled out its own line of bowls, including the Smoked Brisket Keto Bowl. The bowl features smoked brisket, guacamole, lettuce, pico de gallo, salsa verde, and shredded cheese.
Smoothie King is launching a line of keto diet-approved smoothies on Tuesday, using high-fat, high-protein ingredients like almond butter, cocoa, and almond milk.
The two blends launching this week are Keto Champ Berry, made with blueberries, raspberries, and almond butter, and Keto Champ Coffee, which features almond milk, cold brew, and cocoa. Both smoothies contain Smoothie King's keto protein blend.
"Guests are seeking smoothie options to meet a variety of dietary needs – particularly, we're seeing an increase in lifestyles that limit carbohydrate intake," Smoothie King chief marketing officer Rebecca Miller said in a statement.
BurgerIM is launching what it calls the first Keto Burger, partnering with Unbun Foods on a low-carb bun.
The burger will be available at 80 locations in California, with plans to roll the Keto Burger out nationwide in October. It will contain two patties, two slices of cheese, toppings of choice, and Unbun's Keto Bun.