武士はくわねど高楊枝 bushi wa kuwanedo taka youji - the samurai holds his toothpick high even without having eaten.
武士 bushi means samurai, and 楊枝 youji means toothpick. 高 taka is high.
Of course, it can mean to consider every meal a feast, even a modest one. And also, to behave with dignity and honour when things tend to get you down.
Pickles are called otsukemono 漬物 and accompany quite every meal.
Sashimi means ad litteram "pierced body" - it is very fresh meat or fish cut into thin slices. It is served with perilla leaf, called shiso. And wasabi paste - Japanese horseradish with very strong taste.