I was surprised and pleased that I received a glass bottle, rather than plastic, but I know with the nature of the fulfillment structure, you never know what you'll get. I tried the syrup first in a protein drink (vanilla) and it was excellent. I've tried the Torani SF English Toffee syrup and like the DaVinci better. The pump works well with the glass bottle, and 4 pumps in 12 oz. of vanilla protein drink seems optimal. I've found in the past that when using a pump in the plastic bottle, when the liquid gets down a couple of inches, just the slight compression of picking up the bottle can cause it to send liquid up and out of the pump.