Add a crispy potato pancake inside a brisket sandwich.
Potato Pancake
You can even use a folded potato pancake in lieu of bread. Flickr/Ruocaled
"Jamming a crispy potato pancake inside a brisket sandwich always makes for an unexpected surprise," Chef Vincent Olivieri, chef de cuisine at Fairway Market, and Fairway Café and Steakhouse told INSIDER.
The potato pancake sets the tone by adding sweetness to what will soon be a nice salty sandwich, he added.
Add flavorful ingredients to your sandwich spreads.
jalapeno poppers
Fried jalapeños can add some spice and crunch to any condiment. Shutterstock
"Take your normal sandwich spreads to the next level by blending in some of your favorite ingredients," Oliveri told INSIDER.
He suggests roasting jalapeños and blending them into some mayonnaise with caramelized onions, cilantro, and lime juice for a spicy and acidic sandwich spread.
Go for a steak of roasted cauliflower.
Parmesan Roasted Cauliflower
It works with eggplant, too. Rasa Malaysia / Pinterest
To create veggie sandwiches that are just as hearty as their meaty counterparts, celebrity chef Dan Churchill recommended creating a "steak" of your favorite vegetable.
"Cauliflower usually gets all of the credit, but this works really well with something like zucchini, eggplant, or beets," Churchill told INSIDER. "Slice it and cook in the oven with some olive oil and all your favorite seasonings. It creates the bite you're looking for in a sandwich — without the meat."
Add fried shallots to grilled cheese sandwiches.
shallots
Frying shallots can make them super crispy. joebielawa/Flickr
"I use fried shallots as a garnish for a variety of dishes and canapés, but I really love adding the leftovers to a grilled cheese sandwich," said Chef Jessica Meter of Shultz & Ficher. They stay just crispy enough to add a bit of crunch and provide a really great umami flavor, she added.
Spread deviled egg filling on your sandwiches.
Deviled Eggs
It will add richness to your sandwich. DariiaBelkina / iStock
"Anytime I make deviled eggs, I save the extra filling and use it instead of mayonnaise on sandwiches," Meter told INSIDER.
She said the filling contains the same ingredients as mayonnaise, but it has an added richness and thicker texture that can make a regular turkey club extra decadent.
Add pickled ramps to your sandwiches.
pickled ramps
They have an onion flavor. Flickr/notbrucelee
Ramps are a type of wild onion that grows in the spring in parts of Canada and the US. They are oftentimes pickled for a longer-lasting flavor.
"Obviously pickled ramps are quite seasonal, but I try to make as many jars as possible in the spring, and use them throughout the year on pretty much any sandwich you’d want," said Meter.