This was my first time visiting the place and it's definitely not the last.
Yu-Yu is a very small, but very clean kashi age restaurant. Kashi age here is what I call fried goodness on a stick. It can range from veggies to meat and seafood. I ordered a few veggies (so my non-meat eating mom could try them) as well as some chicken shiitake kashi age. Each piece of kashi age can be as low as $1 and up to $2 for seafood. The super sweet and patient waitress will bring you dipping stuff for them (such as the kashi age sauce and chili salt and curry salt). You can order different sauces if you want as well. I was tempted to order more but I already had zaru (cold/chilled) udon on the way.
The cold udon was nice and refreshing to eat. It came with dipping stuff for the noodles and a side of fresh chopped green chives. My mom ordered a seafood udon dish that had a sort of Italian kick to it (translation: it's soup base had garlic in it). I think the udon was called Vondole or something.
Anyways, the service and food were excellent. I'll leave you with some advice the restaurant was super busy for a small place so if you'd like to come here for lunch try to get there early! They are open from 11 AM to 2 PM for lunch and won't be open again until 5 PM for dinner. Hopefully I'll be able to try this place again for dinner. :)