Wild Garlic (Allium vineale)
Also called onion grass or crow garlic.
Thin hollow leaves, which are not round as in chives, but flattened.
The flower stalk grows in the middle of the leaves and at the top is a little cluster of yellowish brown (sometimes purple) bulbils with some flowers between them. Sometimes there are no flowers. The bulbils are round (Allium oleraceum has pointed bulbils). Around the cluster of bulbils and flowers there is one leaf with a short point as a spathe/bract/sheath (Allium oleraceum has two leaves with long points). The taste is rather sharp. If used as food, it is probably best to harvest the tender leaves early in spring, but you will not get a large harvest and it's best not to harvest wild plants. You can however try growing field garlic in your garden by planting some bulbils that you take from wild plants.