Originally being a name for tonic water, Paso de los Toros was expanded into a line in itself, with the inclusion of lemon and grapefruit flavored drinks.

Rómulo Mangini, a chemistry student from Montevideo also moved there with his wife to work in his in-law's business.

A short while later, the chemist opened a soda factory where he produced soap and later on soft drinks with fruit flavors.

Jones challenged the young chemist to try to come up with a formula to produce tonic water similar to the one that was currently being sold in Uruguay, Bull Dog, an English brand.

[2] According to Jones' refined palate, the Uruguayan tonic water had successfully surpassed the one imported from London.