Gilaburu (Viburnum opulus) — Bulk Supply for Functional Beverages

Gilaburu — Viburnum opulus, known in English as guelder rose and across Slavic markets as kalina — has carved out a niche but durable position in functional beverage formulation. Anatolian, Caucasian and Eastern European consumers know the bitter-tart fruit from traditional drinks, and Western functional-drink developers are increasingly working it into super-fruit blends that need a distinctive sensory hook.

The commercial nuance is harvest timing. Viburnum opulus berries are aggressively bitter at autumn maturity; the first frost converts the iridoid glycosides and softens the profile into the characteristic sweet-bitter signature buyers expect. TANDOR looks for post-frost harvested gilaburu from collectors in Romania, with material available as whole IQF frozen berry, single-strength juice (NFC), 65-Brix clarified concentrate, and dried whole berry for tea and tincture applications. Suppliers provide a Certificate of Analysis per lot covering Brix, titratable acidity, microbiology, pesticide residues and heavy metals against EU 2023/915. The active fraction — iridoids and viburnin — can be quantified on request where your label or technical file requires it.

Packaging is 20 kg food-grade polylined cartons for IQF, 200 or 1000 kg aseptic bags-in-drum for juice and concentrate, and 10-20 kg fibre drums for dried whole berry. Lead time is stated by the supplier on each offer; harvest-season fresh-pack lots are scheduled November through January and reserved in advance. If you are formulating a juice, shot or fruit blend, send us your format (IQF, juice, concentrate, dried), volume and Brix or moisture target — we come back by email with supplier offers and ask the supplier for a representative sample.