2: Believes in harnessing hydrogen for sources of propulsion (7)
3: Our Foreign Minister embraced German, and in his own country (4,5)
4: Prohibit an attorney's organization (3)
5: Oxygen is pretty amusing. (3)
6: There was little space in the satanic heresy. (5)
7: A drop of the hard stuff? (7)
8: Dry vegetarian, about to like this puzzle, perhaps? (6, 7)
9: Holder of strange ritual of troll (5,8)
12: One providing funds for last one in debt (7)
13: Embarrassed when a graduate took off (7)
16: Food (trace of nourishment) wrapped in skin in Scottish city (9)
18: An Asian making money carrying a letter from Greece (7)
20: Apricot tart contains cheese (7)
22: Famous pianist's inclination for vocalizing (5)
25: See, you are a cad. (3)
26: Beauty stripping top and bottom is an additional feature (3)