I've tasted my local coffee shop's specialty coffee in which they substitute homemade almond milk for regular milk, and it tastes creamy and smooth. No bitterness.
When I try to recreate this with Starbucks coffee beans ground and put into a moka maker, and then adding sugar and microwaved Silk almond milk (bought from the store, and frothed a bit with a milk frother), it tastes slightly tangy and kinda bitter. The taste is kinda strange. I don't taste it from the coffee or the almond milk alone, but when combined, it forms.
Does anyone have any ideas what could be happening and what I could do to remedy it?
I would like to avoid too much sugar.