I do something similar. Mine is olive oil, balsamic vinegar, and a tsp of really strong mustard. I put mine in a small Tupperware in the fridge, that way I can shake it up easily to mix, and I just add to it as I get low.

I use the exact same technique if I’m trying to keep a batch going.

I actually started with a bit of honey and removed it after some experimentation. Figure any time I can avoid adding sugar and like the taste as much or more, I should take advantage. ;-) I'm with you the cleaning graters-- too lazy for that... Depending on what's in the salad, I'll adjust the proportions, or even throw in some turmeric, paprika, or sautéed garlic.

Oh I’ll have to try out those last ideas sometime soon. I can see paprika being great

Smoked paprika especially. :)

Having a dishwasher makes using a grater so much less dreadful - perhaps more than any other single kitchen implement. When I had a dishwasher at home we even got a Microplane zester. It's amazing how much flavor and aroma exists in lemon (and other citrus) zest that's not in the juice.