These are the principle type of Raspberry native to the Pacific Northwest. I have been eating them my entire life but only as a fruit.
From botanist and Indian Agent James Swan's 1857 book "The Northwest coast, or, Three years' residence in Washington Territory"
"The most pleasant, cooling, and healthy vegetable is the sprout of the wild raspberry (Rubus spectablis). This shoots up with great rapidity, seeming to grow as fast as asparagus. These sprouts are collected in bundles and brought into the lodge, where they are denuded of their tough outer skin, and the centre is as crisp and tender as a cucumber, and, being slightly acid, is delicious. They are slightly astringent; and as the herring begin to make their appearance at the same time, and from their oily nature, and the immoderate manner in which the Indians eat them, are apt to produce disorders of the bowels, the sprouts, being freely eaten at the same time, counteract the effect."
This is really interesting. Thanks for posting. It seems like so many times there are food items hidden in sight of items we already know. This is a lot like broccoli I think. We eat the flower and ignore the fact that the stem and leaves are edible too.
I thought so too and can't wait to try it as many salmon berry abound. The entire book is really interesting, I will link a PDF from the WA secretary of state website for anyone interested in such things in the 'books' forum.