We all have our favorite, nostalgic comfort foods from childhood that may be unfamiliar to others’ taste buds. For Martha, one of those meals is an onion sandwich.

In a video we posted to our Instagram feed from Martha’s cooking show, she reminisces on the times she and her father would make onion sandwiches late at night during a serious Scrabble tournament. The comment section was divided over the controversial sandwich—made with white bread, raw onions, and butter.

Martha notes that the onion sandwich was her father’s favorite sandwich, and “some of us like things just a little bit off-beat.”

Many viewers commented on the video and shared their thoughts on the unusual sandwich combination. “Martha I have my opinions about this one,” one person said. Another wrote: “It’s delicious. I tried it years ago and I have one every now and then. (A mint is absolutely required afterward…).”

Others shared their own unusual sandwich combinations, like peanut butter and mayo, pickles and mayo, cream cheese and onion, and even mayo and onion.

Many commenters reminisced about their grandparents or parents making onion sandwiches, or how they ate them growing up. Onion sandwiches were quite popular during the Great Depression, as they were inexpensive to make when meat and other traditional sandwich toppings were hard to come by, and they have stuck around in many homes since.

How to Make Martha’s Onion Sandwich

Martha’s onion sandwich requires just three simple ingredients (that you probably already have):

• White sandwich bread
• Sweet butter (also known as unsalted butter)
• White onion (Martha specifically calls for a “pungent” white onion)

To assemble the sandwich, spread butter on both sides of the bread. Then, thinly slice the white onion and place it on the buttered side on the bread. Martha adds two slices of onion to her sandwich, but you can add as many as you’d like. Top with the second piece of bread and slice the sandwich diagonally before serving.

If you’re even a little intrigued by this savory sandwich, try making it the next time your family or friends bring out the board games and crave a late-night snack. Just have some mints ready to pass around!