BATON ROUGE, La.--(BUSINESS WIRE)--Global vanillin producer Solvay this week celebrates 25 years of Rhovanil® vanillin proudly “Made in the USA” at its plant in Baton Rouge, Louisiana. Vanillin, the site’s most recognizable product, is a vanilla taste signature professionals use in sweet goods and beverages, as well as room fresheners and fragrances. “We are proud to offer the only vanillin ‘Made in the USA.’ This week we say ‘thank you’ to our customers for putting their trust in us and choosi