On June 17 KFC launched its vegan “Imposter” sandwich at 20 select locations, and just four days later it’s already completely sold out.

“The Imposter”, which is a Quorn-based vegan chicken sandwich, launched at select locations in England including Bristol and London. The product is now sold out at all locations, and they won’t be returning until July 2. According to KFC, they’ve sold 500% more of The Imposter than they traditionally do with new product launches, thought his is the company’s first foray into vegan meat products.

“We knew there were plenty of people who would want to get a taste of the Imposter, but we didn’t anticipate this phenomenal response,” said Victoria Robertson, Senior Innovation Leader at KFC. “We can’t wait to get the Imposter back out in restaurants so vegans can get their finger lickin’ fix.”

The Imposter features a vegan chicken fillet made from Quorn, which sales vegan and vegetarian meats products at grocery stores across the globe. However, the product is made specifically for KFC, and includes their famous combination of herbs and spices. The sandwich also includes vegan mayo and lettuce.

Below are the 20 locations that started selling The Imposter on June 17, and will again starting July 2:

London – Gloucester Road

Walsall – Junction 10 M6 Services

Walsall – Park Street

Tyburn – Kingsbury Road

Cannock – Orbital Retail Park

Bristol – Fishponds

Bristol Bradley Stoke

Bristol – Winterstoke Road

Bristol – Eastgate Retail Park

Bristol – Avonmeads Retail Park

Bristol – Shield Retail Park

Bristol – Keynsham

Bristol – Hengrove Leisure Park

Bristol – The Venue Cribbs Causeway

Birmingham – Great Bridge Retail Pk

Bloxwich – Leamore Lane

Tamworth – Ventura Retail Park

Dudley – Merry Hill Food Court

Stourbridge – St Johns Road

Dudley – Merry Hill Drive Thru