Henry Firth and Ian Theasby are the duo behind the online recipe phenomenon BOSH! (Photo: Facebook)

Vegan

foodies, cookbook authors, and online sensations Henry Firth and Ian Theasby appeared

on the hugely popular US talk show Today on Sunday.

Make-ahead

Monday

The duo

walked the audience and host Megyn Kelly through three fully vegan sauces

during the morning segment know as Make-ahead Monday.

ADVERTISEMENT Thanks for watching! Visit Website

The sauces,

which the show emphasized could be made ahead and used throughout the week,

included a stir fry sauce, a marinara sauce, and a 'fiery' pesto Kelly

described as ‘awesome’ post taste test.

BOSH!

cookbook

Audience members

were each given a copy of the recently smash hit cookbook - BOSH!:

Simple Recipes. Amazing Food. All Plants. - to take home with them.

After a

bidding war for publishing rights, which was eventually won by Harper Collins, the

book topped Amazon's 'all hot new releases' list, and took sixth place of the

food and drink bestsellers.