Jalapeño

The jalapeño is a medium-sized chili pepper pod belonging to the species Capsicum annuum. It is a highly valued cultivar used globally for its distinct flavor and heat. A mature jalapeño is long and wide, hanging down from the plant. While many people consume them while they are green, they can also ripen into red, orange, or yellow colors. These peppers are generally wider and milder than the similar Serrano pepper.

Understanding the heat of a jalapeño requires looking at the Scoville scale. This scale measures pungency, or the sensation of spiciness. Most jalapeños fall between 4,000 and 8,500 Scoville heat units. The heat is caused by compounds like capsaicin. These compounds are concentrated in tiny vesicles. These vesicles are found in the placenta membrane surrounding the seeds. They appear white or yellow and can fluoresce under violet light. Interestingly, the heat level can change based on environmental stress. Factors like erratic watering, temperature changes, or soil nutrition can increase the pungency. Even the number of brown scars on the skin, called 'corking,' correlates with higher heat levels.

Growing these plants involves specific biological and environmental requirements. The growing period typically lasts between 70 and 80 days. A single plant usually produces between 25 and 35 pods. To thrive, jalapeños need at least 6 to 8 hours of sunlight every day. They prefer warm climates and well-drained soil with a pH between 4.5 and 7.0. For seed germination, an optimum temperature is 80 degrees Fahrenheit. If temperatures rise above 95 degrees Fahrenheit, germination may fail. Farmers also manage nitrogen levels to boost production. Providing 15 to 22 mM of nitrogen helps the plant produce more leaves and more pods.

There are several distinct types of jalapeño plants used in agriculture. Most fall into four categories: F1 hybrids, cultivars, landraces, and F2 hybrids. F1 hybrids are created by hand-emasculating and cross-breeding parent plants. This process produces offspring with high uniformity and "hybrid vigor." While they offer the highest yields, their seeds cost 25 times more than open-pollinated seeds. Some F1 hybrids use recessive male sterility to avoid hand-pollination, but this can reduce F2 yields by 25%. Researchers also develop specific cultivars to improve traits. They look for resistance to diseases, thicker fruit walls, and earlier ripening. Notable cultivars include 'TAM Mild Jalapeño' and the colorful 'NuMex Piñata.'

History shows that jalapeños have been important in the Americas for thousands of years. The Aztecs used them long before the Spanish conquest. Historical records, such as the Florentine Codex by Bernardino de Sahagún, mention Aztecs selling fresh chilies and chipotles. Chipotles are actually smoked, ripe jalapeños used in dishes like mole. The name "jalapeño" is Spanish for "from Xalapa," the capital of Veracruz, Mexico. While the pepper is not grown in Xalapa, Vicente Jiménez invented the process of canning and pickling them there. This helped spread the pepper to the rest of the world.

Jalapeño production is a massive global industry with significant economic value. In 2009, Mexico produced 619,000 tons of jalapeños. The state of Chihuahua provided 42% of that crop, while Sinaloa provided 12.9%. In the United States, California is the leading producer, followed by New Mexico and Texas. In 2002, the jalapeño crop in New Mexico was worth $20 million after processing. One company, La Costeña, controls about 60% of the global market. They export 16% of all Mexican jalapeños, and the US imports 98% of those exports. Other commercial producers include China, Peru, Spain, and India.

People enjoy jalapeños in many different culinary ways. They can be eaten raw or cooked in various dishes. For example, "jalapeño poppers" are stuffed with cheese and often wrapped in bacon. "Chiles toreados" are fresh peppers sautéed in oil until the skin blisters. In some cultures, they are sliced and served in Vietnamese pho or bánh mì. They are also common toppings for pizza or ingredients in salsa. Some people even make sweet jalapeño jelly. Because the oils can irritate skin and eyes, many cooks wear gloves when handling them. If irritation occurs, washing with hot soapy water and applying vegetable oil can help.