The seeds are on the small side and a pale bluey-green, with a dimpled surface. Plants are slightly strung out and small-leaved, with quite fine pointy foliage and long robust tendrils. The flowers, when they arrive, are small, bright white and quite dainty with a distinctly lobed standard petal and open wing petals. Many (though not all) are borne in pairs. Once flowering gets going it is fairly prolific, bearing short plump green pods in abundance all over the plants. The supply is kept going for several weeks if picked regularly, and they are ready earlier than other varieties.
There has to be a trade-off for earliness, and with Alaska that trade-off is size. The pods, though plentiful, are rather tiny. They become very firm at maturity, but the size is significantly smaller than a maincrop variety. Consequently they only produce five or six peas per pod, though they are packed in very tight.
Texture of the raw peas is firm-ish, and remains so when cooked. Cooked peas turn a bright emerald green. Fortunately there has been less of a trade-off with the flavour, which is good ... sweet and robust, though with an underlying 'soapiness'. It isn't in the top eschelons of finest-peas-ever-tasted, but considering it was bred for earliness rather than its flavour it's not at all bad, and probably the reason it's enjoyed a lasting favour with gardeners and growers (in the US at least).
Overall the taste, texture and appearance are distinctly old-fashioned, which is not surprising given that the variety is around 130 years old. Well worth a place in the garden for a quick and tasty pea crop at the start of the season, but you would probably want to move on to something bigger and juicier for your main crop.