crisphead lettuce การใช้

• In the US, no one type predominated until the early 20th century, when crisphead lettuces began gaining popularity.
• A : The way you phrased the question, I assume you are talking about iceberg, aka : crisphead lettuce.
• After the 1940s, with the development of iceberg lettuce, 95 percent of the lettuce grown and consumed in the US was crisphead lettuce.
• A lettuce that went by the name of iceberg was developed in the 1890s, and somehow the name resurfaced when new varieties of durable, easily shippable crisphead lettuce began emerging in California in the mid-1920s.