Is soju high in caffeine?

What to know about soju

There are two drinks sharing the name soju and they are not really the same product. Traditional soju is a pot distilled spirit made from rice, barley or wheat, strong and aromatic. The green bottle soju that dominates convenience store fridges is something else: in 1965 South Korea banned distilling rice during a grain shortage, producers switched to cheap column distilled neutral spirit from sweet potato and tapioca, and the modern formula stuck. That spirit comes off the column near 95 percent, gets cut with water down to roughly 16 to 20 percent, and is then sweetened to round off the harshness. The sweetener is the part worth logging. Saccharin was the original, and today brands reach for sugar, stevia, sucralose, acesulfame K, erythritol, sorbitol or xylitol, with citric acid for brightness. That is why soju has no FODMAP rating here: it depends entirely on what your brand puts in. The spirit itself is undramatic. Nothing grades high, there is no gluten and no caffeine, histamine and tyramine are moderate, and salicylate and oxalate sit at the borderline mark.