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www.eattheweeds.com/tropical-almo...nd-sea-almond/

Eat the Weeds

Botanically Terminalia catappa (ter-mih-NAIL-ee-uh kuh-TAP-uh) it is not related to the edible almond. No doubt the tree gets it common name from the seed pods which look like large unshelled three-inch almonds and from the seed/kernel which resembles almonds. Unlike true almonds though the outside of the fruit is also edible. Both the seeds and the fruit of this particular species are edible raw. When the fruit dries it is very light thus buoyant and uses water (ocean currents) to get spread around. They are a common “sea bean” found along Florida beaches. For such light fibrous things they are surprisingly tough to open (especially if you have only two chunks of small concrete as we did that day… the surface of Florida does not have rocks.)  Julia Morton, who was a long-term botany professor at the University of Miami, reported in 1985 that “defleshed, thoroughly sun-dried fruits may be readily cracked by a sharp blow on the keel.” If well-dried they will also open if hit on the end point with a hammer.