The
leaves of the serrano pepper plant are distinctly grayish, unlike any
other pepper we know of. The bulletlike peppers are about 2" long and
grow abundantly on very showy bushes, 2-3' tall. Serrano peppers are quite
hot - hotter than jalapeños, but not as hot as habaneros. They have thick
walls and a cavity that is filled with seeds. Serranos are popular in
Mexico where they are used fresh and pickled. Green serranos are used
in salsa verde and serranos are the preferred pepper for pico
de gallo ("rooster beak"), a hot relish popular in the southwestern
U.S.