It grades mildly elevated rather than high, which puts it above most fresh berries without making it a food to avoid outright. What sets youngberry apart is that it also grades mildly elevated for tyramine, so it carries two amines rather than one. Both are the sort of grade that a small fresh portion clears easily and that a large serving of long-stored or thawed fruit does not. During a strict low-histamine phase, treat it as a food to reintroduce and observe rather than an early yes.

It depends entirely on which trigger is yours, which is why the two deserve separate journal entries. On salicylates youngberry is clearly gentler: it grades mildly elevated where blackberry grades high. On the gut side blackberry is high FODMAP with a heavy polyol load, while youngberry has no polyol grade recorded and its total FODMAP column is untested, so there is no confirmed advantage there, only an absence of data. On amines blackberry wins, since it grades clean for both histamine and tyramine where youngberry grades mildly elevated for each.

It is a bramble hybrid raised by B. M. Young in Louisiana in the first decade of the twentieth century, crossing a phenomenal berry with a Mayes dewberry, and released commercially in the 1920s. It looks like a long, glossy, very dark blackberry and tastes sweeter and less acidic than one. It never took hold in North American supermarkets because the fruit is too soft to ship, but it became a mainstay of jam and frozen fruit in Australia, New Zealand and South Africa, which is where most people meet it.

They have not been tested, so the total FODMAP column reads as unrated. What can be said is narrower and still useful: fructans and GOS both grade clean, so the two FODMAP groups that drive symptoms for many people are not present. That does not clear the fruit, because excess fructose and polyols have not been assessed at all, and its close relatives are polyol heavy. Start with a small portion and record it rather than assuming it behaves either like blackberry or unlike it.