There is not only salmon of course, simpler dishes like omelette or sorrel soup for example are just delicious.
It is rather easy to add sorrel in a recipe, you wash and dry the leaves, you cut the stems to keep only the tender part of the leaves, even you remove everything, eventually you chop (not essential), and you add.
But this is where the "problem" arises, the green color of the sorrel is very fragile and fears a lot the heat, in fact as soon as you heat the leaves they become almost instantaneously of a rather ugly khaki-brownish color, color alas much less appetizing. But don't worry, the taste is not affected, it's just a question of aspect.
What to do?
Unfortunately, the problem is almost insoluble, we can not prevent it, at most accompany it.
Let's start with a truism, if you don't cook it, sorrel doesn't change its color, of course, but it's interesting if you put it in a salad for example, you'll enhance the taste of your salad, the little acidity (still) does its job, and you'll keep the green color.
And in cooking?
This time, it is necessary to accompany the cooking a little, not necessarily to make it simple with butter, like spinach, but rather to incorporate it into a cooking support, for example cream or eggs of course already evoked, but also a bechamel or a quiche device.
The discoloration of the sorrel is less marked if you proceed this way, and yet the taste is still there.
Note in passing that if the sorrel goes so well with the cream, it is still a question of balance, the suave, mellow taste, sometimes a little too rich, of the cream is attenuated by the acidity of the sorrel, which is highlighted.
For budding gardeners, sorrel is planted and grows quite easily in our climate, but you can also pick wild sorrel in the fields or ditches before mowing, it takes a little eye to recognize it at first, but it is quite easy afterwards.
To sum up: You can hardly keep its beautiful green color unless you eat it raw in a salad for example, but you can accompany it by incorporating it in other things: cream, eggs, béchamel, etc. The loss of color is less marked, but the taste is still there.