KANSAS CITY — Retailers and restaurants are having a hot fling with jalapenos, kicking up cream cheese, canned tuna, crackers and cocktails.

“In the past, jalapenos appeared more in dishes that were expected to be spicy – for example, nachos and salsas,” said Lauren Hallow, an assistant editor at Chicago-based Technomic, Inc. “But lately, we’ve seen restaurants using jalapenos to add a kick to an otherwise not-so-spicy offering, such as burgers.”

Click here for a slideshow of recent product launches and menu items featuring a jalapeno flavor.

Carl’s Jr. and Hardees introduced a limited-time jalapeno turkey burger in December, and The Habit Burger is testing a blue cheese burger topped with pickled jalapenos and bacon. Jalapenos are pepping up pasta, such as Uno Chicago Grill’s recent addition of baked macaroni and cheese with jalapeno-alfredo sauce, and adding bite to bread, including Quiznos’ jalapeno-cheddar baguette.

The salsa staple also stars in sauces and spreads. Fast-casual chains Whataburger and Mooyah offered jalapeno-flavored ketchup this year, and Red Lobster recently added onion rings with a jalapeno-ranch sauce to its appetizer options. The late-night menu at Yard House includes Monte Cristo Pops served with powdered sugar and jalapeno-peach syrup. An item on Panera Bread’s new hidden menu features a cilantro-jalapeno hummus.

Additionally, jalapenos are flavoring alcoholic beverages, including a jalapeno-cilantro mojito at BLT Steak, a pepper-melon margarita at Roy’s Hawaiian Fusion Cuisine and a dirty martini with a jalapeno-stuffed olive at Jerry’s Famous Deli.

“Based off some of Technomic’s consumer trend reports, it appears more patrons, especially younger ones, are craving spicy options,” Ms. Hallow said. “This trend coincides with patrons also becoming more adventurous with their meal choices. However, this doesn’t mean that a majority of patrons are going to go out and order something with ghost peppers or smother their dishes in Tabasco sauce. So, that’s why we’ve seen a number of operators begin using jalapenos more, because it’s a safe way to spice up their offerings. Jalapenos add just enough kick without overwhelming the dish — and the consumer.”

The pepper has a familiarity factor that helps consumers predict a dish’s heat, Ms. Hallow said.

“In regards to spice level, jalapenos fall somewhere in the middle,” she said. “They’re more spicy than cherry peppers and Anaheim chiles, but less spicy than Serrano and habanero chiles. People are familiar with them, so if they see a jalapeno turkey burger or a salad with jalapeno-ranch dressing on the menu somewhere, they can guess how spicy that dish is going to be because it’s likely they’ve eaten something with jalapenos before.”

In retail, jalapenos appear in such recent rollouts as Bumble Bee Foods’ Prime Filet canned tuna with jalapenos and olive oil and Kraft Foods’ Philadelphia Spicy Jalapeno Cream Cheese and Oscar Mayer Jalapeno Bologna. PepsiCo’s Frito-Lay division this year unveiled Cheetos Mix-Ups snack mixes that include jalapeno cheddar-flavored puffs, and Snyder’s-Lance, Inc. launched jalapeno-cheddar sandwich crackers.

The pepper’s proliferation is part of a larger trend in hot and spicy flavors, said David Sprinkle, publisher of Rockville, Md.-based research firm Packaged Facts.

“The trend is at once international and generational,” Mr. Sprinkle said. “Millenials are more multicultural both in heritage and in outlook and, as part of that generational profile, are more drawn to bold and spicy foods, including flavors from Mexico, India and East Asia, among other parts of the globe.”

Jalapenos in particular present multiple opportunities for food manufacturers.