The Prophet ﷺ used his right hand for taking his food and drink and used his left hand for other purposes. (Using translation from Abū Dāʾūd 32)
حَدَّثَتْنِي حَفْصَةُ زَوْجُ النَّبِيِّ ﷺ أَنَّ رَسُولَ اللهِ ﷺ كَانَ يَجْعَلُ يَمِينَهُ لِطَعَامِهِ وَشَرَابِهِ وَثِيَابِهِ وَيَجْعَلُ يَسَارَهُ لِمَا سِوَى ذَلِكَ