Source: 10 Amazing Ways to Use Lemons
My list goes up to 11 😉
The closest related to food was stain removal from plastic containers. The rest are polishing or cleaning related. Which makes sense – like vinegar, citrus is mildly acidic, organic and non-toxic. There’ve been studies that suggest vinegar is better than chlorine for cleaning.
#11: limoncello (Italian lemon liqueur) – excellent recipe. Ideally you want Meyer lemons and grain alcohol (Everclear), but vodka (zero malt Scotch) works. Limoncello recipes only use the zest (not peel/rind – read here for the difference), so you can use the lemon for other things.
There is a “low” dose of vitamin K in lemons. But lemons are not the sort of thing many are going to over-consume 😉 I don’t have details, but I suspect the vitamin K is in the zest, as with most citrus fruit.