We call them wild Garlic around my neck of the woods. Or leeks. I pickle them every year. Instead of using sugar I sub in 4 tbspns of maple syrup. they are amazing in anything. Soups,salads, anything with a green in it. I usually pick them right after a good rain. They are ripe when you can put your fingers about 1/2" into the ground and feel the top of the bulb. They just pull right out. I don't dig them up because they take a long time to come back if you upset the root ball they grow from. They grow in patches and clumps and I have found it best to take 3 or 4 from each clump and leave the rest.
I found out I have a couple of acres of them on the property I bought two years ago in the UP. They are delicious on campfire cooked food. This past weekend I cut some up and mixed them in with my burgers before I cooked them on the campfire. Best burger ever.