Place the potatoes with about a teaspoon of salt in a pot and pour enough water to cover the potatoes by an inch

Set over medium-high heat and bring to a boil. Let cook till soft.

When potatoes are done, reserve about a cup of the cooking liquid and set aside

Mix potatoes with ackees and pass them through a sieve, food mill or potato ricer. You could also use a potato masher but you'd end up with a few ackee chunks here and there where the masher misses the pieces, alternately you could puree the ackee and mix it in at the end.

Use the reserve cooking water to thin out the mash if desired