# Impossible Whopper launch

> Burger King tested the Impossible Whopper at 59 St. Louis area restaurants.

- Owner: Burger King and Impossible Foods
- Kind: Food & drink
- Sector: Food & beverage
- Seed date: 2019-04-01
- Milestone date: 2019-08-08
- Date basis: Documented milestone; not a measured attention peak.
- Spread Score: 62 (Viral), v1.3
- Mechanics: Controversy, Pairing

## Summary

Burger King tested a plant-based Whopper in St. Louis in April 2019. It expanded the test and launched the sandwich nationwide in August.

## Timeline

- 2019-04-01 — Burger King (Retail) — Burger King began testing the plant-based Whopper at 59 St. Louis area restaurants.
- 2019-04-01 — St. Louis Magazine (Press) — Holly Fann compared the new burger with a beef Whopper at a St. Louis area restaurant.
- 2019-04-01 — Los Angeles Times (Press) — The Los Angeles Times covered the St. Louis test.

The full timeline, metrics and sources are on the case page, or via the Pro API (https://howitspread.com/mcp#api).

Canonical URL: https://howitspread.com/cases/impossible-whopper-launch-2019

Cite as: How It Spread (2026). “Impossible Whopper launch.” Case HIS-01792. Spread Score v1.3: 62/100. Updated 2026-10-28. https://howitspread.com/id/HIS-01792