Careful on the quantities of olives, mushrooms and capers. There's a lot of umami in that. for 5lbs of tomatoes I use about 1/2lb mushrooms and a hand full of olives (25-30)
Amazon has Hendersons in the USA - this is 4 bottles for the price of 8 here.
Yum. We've tried a number of vegetarian replacements for Worcestershire sauce, nothing comes as close as Henderson's Relish so far: https://www.amazon.com/Hendersons-Relish-284ml/dp/B0145F984E
Makes a killer beefless strog.
>Henderson's Relish
I want to try it now too!
https://en.wikipedia.org/wiki/Henderson%27s_Relish
Worth 11 bucks?
https://www.amazon.com/Hendersons-Relish-284ml/dp/B0145F984E