One of the varieties of Black Walnut (Juglans Nigra) which have been developed for thinner shells and fuller kernels, Emma K is grown in the UK more for its decorative leaf and general looks than for nuts. Like all varieties of J. Nigra, the husks do not split when the kernels ripen and must be tested by pressing to see when they begin to soften.
If the husks are left in place after this the nuts may well spoil. Also in common with its sister varieties, the kernel is four-lobed and difficult to free cleanly from the shell, so that the main uses are for baking, topping ice-cream and wherever broken pieces are acceptable.
A leaf of Emma K