Even if you go 10g over a normal shot, you're over-extracting which would start to taste bitter. But using already-extracted grinds for a new cup? I guess if you add lots of sugar and milk you may not notice.
Alright. Don't hesitate to share then. I can't give away my one sugar... would love options to swap with.
Also just not eating sugar makes you more sensitive over the smaller amount of sugar food contains anyways.