Samphire grows near the sea and is native to the UK. It is in season July-August, although imports are available at other times of the year and has been spotted in large branches of Tesco and Asda!.
The most common variety is marsh samphire, which has bright green stalks, similar to baby asparagus. Its crisp, salty taste makes it different from asparagus however. Technically it can be served raw but is rather salty. We recommend steaming it for 2-3 minutes - avoid salting it or adding much salt to other ingredients as it is already salty.