Answer:
What is this Mexican dish consisting of a tortilla rolled around a filling, typically of beans or ground or shredded beef?
Glittering points that downward thrust. Sparkling spears that do not rust. What is it?
Sitting down you have it, Standing up you don't.
If you are unsure how to use one then just ask a flight attendant.
One am I, among six others: Largest, smallest, cold, dark and two brothers
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.