Didn’t have any Diffords daiquiri bitters so this was an exercise in how much difference bitters make. With Angostura bitters this was perfectly pleasant, but swapping that to grapefruit bitters elevated it to a whole new level.
I use orange bitters, and it’s quite tasty with that too. No idea what the Difford’s bitters taste like since they are very expensive and difficult to come by in the US.