Scoville scale
In 1917, owner Jacob Frank contracted for the Estilette Pepper Farm in Louisiana where Adam Estilette and Frank became business partners. They mixed spices, vinegar, garlic and cayenne peppers and aged them, creating the original blend of Frank's RedHot, which entered the market in 1920. The Original blend ranks low on the Scoville scale, with 450 SHUs, but the XTRA Hot variety has 2,000 SHUs.