Gul, I spent some years in Brasil as a youth and searched mightily up here for a cachaca substitute for my caipirinhas before it finally became available a year or three back. I came up with two possibilities: 1) Cuervo TRADICIONAL, is 100%agave, and not too aggressive. "Pinga" has a mysterious quality that separates it from the rum family that I found only tequila can approach. TRADICIONAL is a younger agave and resembles some of the local Cachacas that are brewed in the rural areas of Brasil. Avoid Cuervo Gold, it's mostly corn syrup. 2) Any younger rum from small-batch producers (hard to find). A certain Mount Gay product labeled "100% sugar cane rum" (green and gold labeling) appeared now and then did the trick. Tres Marias from Martinique was pretty close too. I ran into a Brasilian couple in Vermont who had adapted their caipirinhas by using Absolut (Caipiroska - thank you, beans!), but they insisted on peeling the rind off the limes before mashing, a travesty in my book as the lime-oil is essential. You might find Cachaca back on the list once the warmer weather arrives. Cross your fingers!