for now, summer books with louise erdich and emma straub. thank you very much. >> thank you. william brangham. join us on-line and again here tomorrow evening. for all of us at the pbs newshour, thank you, and see you so. >> major funding for the pbs newshour has been provided by: >> and by the alfred p. sloan foundation. supporting science, technology, and improved economic performance and financial literacy in the 21st century. >> supported by the john d. and catherine t. macarthur foundation. committed to building a more just, verdant and peaceful world. more information at macfound.org >> and with the ongoing support of these institutions >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. captioning sponsored by newshour productions, llc captioned by media access group at wgbh access.wgbh.org ♪ -today on "america's test kitchen," julia and bridget make sensational beef stir-fry, jack challenges bridget to a tasting of soy sauce, and keith makes julia unforgettable scallio