"BPRO"TM, IS A SYNTHETIC BUTTER FLAVOURING COMPOSED OF BUTANE-2, 3-DIONE (C4 H6 02) SUSPENDED IN A CARRIER OF MILK FAT.

GENERAL INTERPRETATIVE RULES 1 & 6 NOTES TO HEADING 30 AND 3302 10 90 00 HARMONISED SYSTEM EXPLANATORY NOTES TO HEADING 3302 ADVICE FROM STATE LAB