Saccharin oddly dropped as energy drink ingredient (4)

I haven't cracked this one yet — but the brilliant team at Times for the Times have:

{s}A{c}C{h}A{r}I{n} [oddly dropped]. The word has come up before, even as recently as this month in a Sunday puzzle, but it’s the first time it has been clued as anything other than a berry or fruit.  Collins has: açaí – a berry that grows on palm trees in the Brazilian rainforests. Because it is rich in nutrients, it is used to make energy drinks.