|Cooking style||Progressive Indian cuisine|
He attended a catering college (IHMCT Kovalam) (Indian Institute of Hotel Management and Catering Technology) in Trivandrum and after receiving a diploma he began working as a trainee with the Taj Group. Anand later left the Taj Group to pursue a career catering in Kolkata and ran a home delivery service from Tollygunge area. He later moved to Bangkok, where he began working at Red, a restaurant that specialized in contemporary Indian cuisine. From there he served as the first chef of Indian descent to intern with Ferran Adrià's research team at elBulli and also began working at various restaurants in Bangkok, a process that Anand stated was frustrating because the businesses "just didn't want anything different". This frustration led him to propose to some friends that he open his own restaurant, Gaggan.
Anand opened Gaggan in December 2010. Since then the restaurant has repeatedly placed on the Restaurant's The World's 50 Best Restaurants list. In 2014 it ranked 17th in the global rankings. In 2015, 2016 and 2017, the restaurant was named both the best restaurant in Thailand, and Asia's best restaurant on the list of Asia's 50 Best Restaurants as reported by Restaurant magazine. This was an increase from the third spot overall in Asia in 2014. The restaurant placed 10th, 23rd, 7th and 4th overall in the world in The World's 50 Best Restaurants in 2015, 2016, 2017 and 2019 respectively, and remained the only Indian restaurant to ever rank in the top 50.
Anand planned to close Gaggan in 2020 to start a 10 seat restaurant that opened only on weekends in Fukuoka, Japan. This plan was shelved when in July 23, Anand resigned from his eponymous restaurant due to acrimony with his partners.
Anand also has investments in other restaurants in Bangkok. He opened a steakhouse named Meatlicious and partnered with Thomas and Mathias Sühring to open Sühring, a modern German restaurant that placed 13th in the Asia's Best Restaurants as reported by Restaurant magazine.  
- "Global Indians: cooking up a storm". Hindustan Times. Retrieved 2 May 2015.
- Sanghvi, Vir. "Rude Food: Gaggan Anand's scientific cooking". Hindustan Times. Retrieved 2 May 2015.
- "Gaggan Anad". Eat at Gaggan. Retrieved 2 May 2015.
- "No.1 Gaggan". The World's 50 Best. Archived from the original on 18 September 2015. Retrieved 2 May 2015.
- "Gaggan". The World's 50 Best Restaurants. Archived from the original on 18 September 2015. Retrieved 1 November 2015.
- Napolitano, Dean (10 March 2015). "Indian Restaurant Is Asia's No. 1". Wall Street Journal. Retrieved 1 November 2015.
- "Archived copy". Archived from the original on 26 December 2017. Retrieved 4 August 2016.CS1 maint: archived copy as title (link)
- "What makes chef Gaggan Anand's Indian restaurant in the heart of Bangkok so special". Financial Review. 27 September 2015. Retrieved 1 November 2015.
- "Gaggan, Nahm soar at World's 50 Best Restaurants awards". Bangkok Post. 2 June 2015. Retrieved 1 November 2015.
- Repanich, Jeremy; Repanich, Jeremy (25 June 2019). "The World's 50 Best Restaurants Have Been Crowned for 2019". Robb Report. Retrieved 12 November 2019.
- "Gaggan Anand is back with a new restaurant. And it's almost sold out!". Condé Nast Traveller India. 7 November 2019. Retrieved 12 November 2019.
- Repanich, Jeremy; Repanich, Jeremy (6 September 2019). "Inside the Messy, Petty Feud That Closed One of the World's Best Restaurants". Robb Report. Retrieved 12 November 2019.
- "Gaggan Anand on Instagram: "why are we REBELS ? timeline of events PERIOD OF ANGER !! 🤯 17-18 June massive argument with partners (EX). 24th June resigned from…"". Instagram. Retrieved 12 November 2019.
- "Request a Table l Gaggan Anand". Gaggan Anand. Retrieved 12 November 2019.