The secret to a truly custom cocktail is building your own botanical infusions from scratch. This versatile vermouth base combines classic aromatics like wormwood, angelica root, and bitter orange peel with a rich Armagnac foundation. You'll steep the mixture for two days to extract deep, complex flavors before blending it into either a bright bianco or a robust rosso vermouth. It's an incredibly rewarding project that'll completely transform your home bar.