…it is clear that on all occasions officially sponsored by Bahá’í Institutions or where the host is acting as a representative of the Cause alcohol should not be served. In private homes or in the course of business or professional activity it is left to the conscience of Bahá’ís themselves whether they serve alcoholic drinks
to non-Bahá’ís but the obligation is very strong to observe the prohibition enjoined by Bahá’u’lláh.
The Universal House of Justice
8 February 1968 to a National Spiritual Assembly
Compilations : Prohibition on Drinking Alcohol