|Scoville scale||1,000–1,500 SHU|
The poblano (Capsicum annuum) is a mild chili pepper originating in the state of Puebla, Mexico. Dried, it is called ancho or chile ancho, from the Spanish word ancho ("wide"). Stuffed fresh and roasted it is popular in chiles rellenos poblanos.
While poblanos tend to have a mild flavor, occasionally and unpredictably they can have significant heat. Different peppers from the same plant have been reported to vary substantially in heat intensity. The ripened red poblano is significantly hotter and more flavorful than the less ripe, green poblano.
A closely related variety is the mulato, which is darker in color, sweeter in flavor, and softer in texture. The pasilla pepper is sometimes incorrectly called "poblano", particularly in the United States, but they are distinct from true poblano peppers. 
The bush has multiple stems and can reach 25 in (64 cm) in height. The fruit is 3 to 6 in (7.6 to 15 cm) long and 2 to 3 in (5 to 8 cm) wide. An immature poblano is dark purplish green in color, but the mature fruits eventually turn a red so dark as to be nearly black.
Poblanos grow in hardiness zones 10–12 and do best with a soil pH between 7.0 and 8.5. They typically prefer full sunlight and may require additional support for the growing fruits during harvest in late summer. A poblano takes around 200 days from seed to harvest and requires soil temperatures of at least 64 °F (18 °C) to germinate.
Preparation methods include: dried, stuffed, in mole sauces, or coated in whipped egg (capeado) and fried. It is particularly popular during the Mexican independence festivities as part of a dish called chiles en nogada, which incorporates green, white, and red ingredients corresponding to the colors of the Mexican flag. This may be considered one of Mexico's most symbolic dishes by its nationals. It is also usually used in the widely found dish chile relleno. Poblanos are popular in the United States and can be found in grocery stores in the states bordering Mexico and in urban areas.
After being roasted and peeled (which improves the texture by removing the waxy skin), poblano peppers are preserved by either canning or freezing. Storing them in airtight containers keeps them for several months. When dried, the poblano becomes a broad, flat, heart-shaped pod called a chile ancho (literally "wide chile" or "broad chile"). These dried ancho chiles are often ground into a powder used as flavoring in various dishes.
"Poblano" is also the word for an inhabitant of Puebla, and mole poblano refers to the spicy chocolate chili sauce originating in Puebla.
- Lillywhite, Jay M.; Simonsen, Jennifer E.; Uchanski, Mark E. (2013). "Spicy Pepper Consumption and Preferences in the United States". HortTechnology. 23 (6): 868–876. doi:10.21273/HORTTECH.23.6.868.
Any pepper type with ≥ 1 SHU could be considered spicy. However, for this study, paprika (0–300 SHU), New Mexico long green or red chile (300–500 SHU), and poblano/ancho (≈1369 SHU) types were included as mild spicy peppers (Table 1).
- Julius, David; Caterina, Michael J.; Schumacher, Mark A.; Tominaga, Makoto; Rosen, Tobias A.; Levine, Jon D. (1997). "The capsaicin receptor: a heat-activated ion channel in the pain pathway". Nature. 389 (6653): 816–824. Bibcode:1997Natur.389..816C. doi:10.1038/39807. ISSN 0028-0836. PMID 9349813. S2CID 7970319.
Reported pungencies for pepper varieties (in Scoville units) are: Habanero (H), 100,000–300,000; Thai green (T), 50,000–100,000; wax (W), 5,000–10,000; and Poblano verde (P), 1,000–1,500 (ref. 23).
- Burge, Weldon (1995). Grow the Best Peppers: Storey's Country Wisdom Bulletin A-138. Storey Publishing, LLC. p. 10. ISBN 978-1-60342-277-2.
- "Ancho: Definition of Ancho in Oxford Dictionary (American English) (US)". Oxford Dictionaries. Oxford University Press. Retrieved 2014-06-29.
ancho; Syllabification: an·cho; Pronunciation: /ˈanCHō, ˈän/; (also ancho chili); Noun (plural anchos); A large aromatic variety of chili, used (usually dried) in dishes of Mexican origin or style. Origin from Mexican Spanish (chile) ancho 'wide (chili)'.
- "Growing Poblano Peppers". Archived from the original on 1 November 2012. Retrieved 10 June 2012.
- "Mulato Pepper: The Ancho's Swarthier Cousin". Pepperscale. November 15, 2014. Retrieved February 23, 2017.
- "Pasilla vs. Poblano". Fiery-Foods.com. Archived from the original on 2010-11-24.
- "Pepper, chili". CHOW. CBS Interactive.