Jalapeños peppers are used a lot in Mexican dishes and I grow them in my garden. I was lazy and let them turn red which I read is inferior in markets compared to the green.
The jalapeño rates between 2,500 and 10,000 Scoville units in heat. In comparison with other chili peppers, the jalapeño has a heat level that varies from mild to hot depending on cultivation and preparation. The heat, which is caused by capsaicin and related compounds, is concentrated in the veins (placenta) surrounding the seeds, which are called picante. — deseeding and deveining can reduce the heat imparted to a recipe that includes jalapeños. They also have a distinct acidic taste. Handling fresh jalapeños may cause mild skin irritation in some individuals. Some handlers choose to wear latex or vinyl gloves while cutting, skinning, or seeding jalapeños. (thank you wikpedia.com)