Highpoint of Glastonbury involves a number having party with element of Indian cuisine (7)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

TOR (the hill known as Glastonbury Tor), containing (. . . involves) A (from the clue) + N (mathematical abbreviation for an unspecified number) + DO (slang for a party). Traditional clay oven used in Indian cooking.