Question:  Tickle is an American docudrama television series that is a spin off of a series airing on which channel ?

Context paragraphs:
Canada: The Story of Us: Canada: The Story of Us is a Canadian historical docudrama television series, which aired on CBC Television in 2017.  Produced by Bristow Global Media, the 10-part series focuses on several significant periods in Canadian history, using dramatic reenactments to depict key moments and featuring commentary from Canadian public and entertainment figures.  It is similar to other docudramas produced by Nutopia for the U.S. and Australia.

List of Lost Tapes episodes: The following is a list of episodes of "Lost Tapes", a thriller horror docudrama television series that airs on the Animal Planet channel.  Each episode is either "TV-PG" followed by V or L, or "TV-14" followed by V or L.  The plot of each episode is described, below, using in-universe tone.

Barbarians Rising: Barbarians Rising is an American docudrama television series executive produced by Adam Bullmore and produced by Michael Waterhouse that airs on History Channel.  It premiered on June 6, 2016.

Interpol Investigates: Interpol Investigates is an American docudrama television series which aired on National Geographic Channel.  The program follows Interpol as its members search for the minute clues left behind by culprits.

Tickle (TV series): Tickle is an American docudrama television series on the Discovery Channel.  A spin-off of "Moonshiners", the series follows moonshiner Steven Ray Tickle as he attempts to sell a large stash of moonshine that he found in the backwoods of Virginia.  Tickle opens a fishing store called "Tickle's Tackle" in the town of Gretna as a front to move the liquor, but discovers that managing a business is more difficult than he expected.

PitchMen: PitchMen (original name: But Wait...There's More) is a docudrama television program produced for the Discovery Channel in the United States.  The show followed infomercial producers and talent Billy Mays and Anthony "Sully" Sullivan as they attempted to sell various inventions through direct-response marketing, mainly through Telebrands, one of the largest direct response/infomercial companies.  The series was narrated by Thom Beers.  Each episode typically focused on two different products.

Rescue 911: Rescue 911 was an informational docudrama television series that premiered on CBS on April 18, 1989 and ended on August 27, 1996.  The series was hosted by William Shatner and featured reenactments (and occasionally real footage) of emergency situations that often involved calls to 911.

Banged Up Abroad: Banged Up Abroad (rebadged as Locked Up Abroad and Jailed Abroad in India for the National Geographic Channel) is a British documentary/docudrama television series created by Bart Layton that was produced for Channel 5 and that premiered in March 2006.  Most episodes feature stories of people who have been arrested while travelling abroad, usually for trying to smuggle illegal drugs, although some episodes feature people who were either kidnapped or captured while they were either travelling or living in other countries.  Some episodes have featured real-life stories that first became well-known when they were made the subject of a film: films that have been "re-made" in this way include "Midnight Express", "Goodfellas", "The Devil's Double", "Argo", "Mr Nice", and, to a lesser extent (with the story of Frank Cullotta), "Casino".

Witness to Yesterday: Witness to Yesterday is a Canadian docudrama television series which featured staged interviews with historical personalities.  It was first broadcast by Global Television Network in 1974, then produced by TVOntario to 1976.  A 12-episode revival of the series was produced in 1998 for History Television.

Moonshiners (TV series): Moonshiners is an American docudrama television series on the Discovery Channel that dramatizes the life of people who produce (illegal) moonshine in the Appalachian Mountains of North Carolina, South Carolina, Tennessee, and Virginia.  The series dramatizes their liquor production efforts, law-evading techniques and life.

Supporting paragraphs: Tickle (TV series) Moonshiners (TV series)
Answer: Discovery Channel