While butter lettuce and Boston lettuce may not have the crunchy leaves of romaine lettuce or iceberg lettuce. Their tender texture and sweet taste make them stand out among the main types of lettuce.

It's also called Boston or Bibb lettuce. But unlike real butter, this is crammed with folate, iron, and potassium. No Caesar salad is complete without romaine lettuce. The CDC calls this a top 10 ...