Mertensia maritima

The Mertensia maritima, sometimes called the Vegetable Oyster in reference to the surprising taste of its slightly bluish leaves. It is a perennial and creeping herbaceous plant, reaching 15 cm (6in) in height and 50 cm (20in) in width. It can be grown in the ground or in a pot. Plant it in spring or autumn and harvest as needed.

The Mertensia maritima belongs to the Boraginaceae family, like Borage, but its iodine taste is more pronounced. This plant, which grows spontaneously in dunes, is now protected. It is an herbaceous, creeping plant with blue-green foliage. It produces bell-shaped flowers in a blue-violet color in summer. Very decorative, the Maritime Mertensia can be planted in ornamental gardens as well as in vegetable gardens. This perennial and very hardy plant remains in place for several years, although its foliage disappears in winter. It requires well-drained soil. You can also grow it in a pot.

In terms of cooking, the oyster-flavoured leaves are generally consumed raw and add a touch of originality to fish dishes or salads.

Harvesting: Leaf by leaf as needed.

Storage: Freshly picked leaves can be stored in the refrigerator for a few days. They can also be preserved in vinegar, like samphire.

Gardener's tip: If your plants are being eaten by snails and slugs, place ash or coffee grounds nearby, and renew after rain.

Note: Delicate plant to cultivate, slow growth, recommended for experienced gardeners.