Review: Tuaca Liqueur. Did you know: You can put Tuaca in a margarita to give it a sweeter, more dessert-like kick? To celebrate National Margarita Day (February 22, yeah, we’re late…) Tuaca sent us a bottle of this Italian vanilla/citrus spirit, the recipe of which dates back 500 years. But Tuaca isn’t the only vanilla liqueur on the market, so I took the opportunity to compare it head to head with Navan and Licor 43, two of the other big vanilla liqueurs that are around. Thoughts follow. Tuaca – Very sweet, distinct orange undertones. Big body, mouth-filling, and a bit cloying on the finish. 70 proof; Italy. B / $25. Navan – More of a pure vanilla character (complete with a bigger alcoholic burn), and with a woody, whiskey-like finish.