I've been working a while on a solid dish soap formulation and this one seems to work good.  It's made with 90% coconut oil and 10% castor oil.  It doesn't make huge bubbles but the grease cutting ability is fantastic and it is a super hard bar.  It is scented with Citrus Sunrise which is one of my popular citrus fragrances. It has notes of lemon, grapefruit, clementine, green herbal floral notes, and amber woods. Just put it in a soap dish close to your sink, lather your scrub brush with it and it will do the rest!