How to Make Bitters?

i grew up with bitters like an european. It's a commo in switland, in italy, it's a common thing. So whenever we went to switzerland, we bought a bottle back. Instead of buying swiss bitters and bringing them to california, can we make the california bitter was what we have on the land? That mad a finote the spark. And i thought, that's not my understanding of a bitter. The first versions were actually quite ied with sugar, with sweet, sweet. We've probably two thousand, 12, 13 somee, right. N there.