The Horse Mint Mentha longifolia is the most common of the mint plants in the Holy Land, found on the banks of streams throughout the country. The Jews called it dandanah, a Hebrew word that does not occur in the Old Testament. They served its leaves along with milk and cucumbers, made a hot drink by boiling them, or used them, as the Romans and Greeks also did, in medicine and cooking. According to Moldenke (Plants of the Bible. Chronica Botanica. Ronald Press, 1952), people scattered mint leaves on the floors of synagogues, and the fragrance was released as people entered and stepped on them.

The horse mint is larger than the other kinds of mint, reaching up to 2 meters (7 feet). It has small, soft leaves with sawlike margins, and lavender-colored flowers.

In Matthew 23:23 and Luke 11:42 Jesus accuses the Pharisees of legalistically tithing not only from their major food crops—olives, dates and wheat, for example — but even from the leaves they pluck for their soup, including mint, and then ignoring issues of justice and poverty.

At least twenty-five kinds of mint are found in temperate areas of the world. It is well known in West Africa as an additive to tea. Depending on what translators do with the other species mentioned in Matthew and Luke (dill, cumin, and rue), if they do not have these species locally, they may transliterate “mint” from a major language. In simplified versions they may cover all these species with a generic phrase such as “all kinds of little plants in the garden.”

Source: Each According to its Kind: Plants and Trees in the Bible (UBS Helps for Translators)