Of Triton, by Anna Banks. Feiwel and Friends, 2013.

In this sequel to the author's Of Poseidon, Emma, now deeply in love with Galen, is drawn into Syrena politics as the descendants of Poseidon struggle with the descendants of Triton. In the first place, although she is the daughter of a Poseidon princess, she is also half-human, an abomination under Syrena law. Secondly, Galen is a prince of Triton's house, and marriage beetween them is forbidden. Thirdly, she is being proposed as a wife for Galen's brother to satisfy a law that requires the heir to marry a princess of the other house every third generation in order to keep harmony among the Syrena.
Plot twists galore drive this novel to its novel conclusion!
Cooking For Geeks : real science, great hacks, and good food, by Jeff Potter. O'Reilly, 2010.

Everything you ever (didn't) want to know about food and cooking, but now that you do, you'll never view a meal in the same way again. Potter provides the whys, hows, and stories behind many of the foods and condiments we use every day. It takes a bit of concentration to read and understand the explanations, but the recipes I tried were tasty. Homemade ginger ale, anyone?