I think the butter adds an element of taste —— replicates the lusciousness of the canned versions.
But you could try eliminating it-—make a small batch, taste it——then add the butter, if needed.
CREAMY SPICED TEA
BASIC MIX Add 14 oz can (or homemade) Sweet/Cond/Milk
to combined 3/4 c plain instant tea powder, tsp ea orange zest, cinnamon,
2 tsp grnd cloves, 1/4 tsp nutmeg. Stir in 6 1/3 c water.
Heat thru portion needed; do not boil.
SERVE in a glass mug w/ an orange rind spiral on the rim.
DO AHEAD Basic mix fridges 5 days. Mix again; reheat. Then serve.