As for the "h" in yoghurt

A little digging around shows that the word "yog(h)urt" is from Turkish. AHD transcribes the Turkish word with a G-breve (yumushak ge) which has only the effect of lengthening the previous vowel. Since this is represented in Turkish by a G with a horizontal line through it. There would seem to be no cogent reason to require use of an H in the spelling of 'yogurt' in the English language. This is just another example of flagrant commonwealth squandering of our precious literal resources.