Old-school style beach plum jelly is made without any added pectin. When gathering them in the wild make sure to include some under-ripe berries. A long simmer makes for a good strong set. It's a sticky jelly with a good puckery punch.
Samphire, a.k.a sea beans, sea asparagus, salicornia, or picklewort, thrives in the marshy coastal areas of the Northeast. Easy to pick, easy to clean, easy to cook, delicious in a quick vinaigrette alone or mixed with asparagus. Great with fish too.
Salicornia is a gnarly little sprout that grows in salt marshes. Lots if it near me in Eastern Long Island. It's been served to me in in fancy-schmancy French restaurants, but I never really knew what to do with it...until now!
I'm not intimidated by the massive dunes of refined sugar in so many jam recipes. Still, this honey-with-a-bit-of-sugar is a nice change. Pureeing some of the fruit thickens it, so you can play up the low sugar angle to those who care.