A good cup of tea, among other things

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Across
  1. 3. tea needs to … for five minutes
  2. 8. … roofs or rooves
  3. 14. a heaping … per person and then one for the pot
  4. 15. once you’ve added the boiling water, you need to … the tea
  5. 16. Orwell is very specific about what sort of … to use
  6. 18. Orwell lists … rules when considering how to make a good cup of tea
  7. 19. whether the weather is a …
  8. 20. used to boil water
Down
  1. 1. … are said to have appeared over London on the day of the Queen’s funeral
  2. 2. … Orwell
  3. 4. … nickname for teapot
  4. 5. we’ll weather the weather … the weather
  5. 6. a cup of tea
  6. 7. you … the water into the teapot
  7. 9. … is not only an excellent English cheese, but it is also the name of a mouse detective.
  8. 10. an electric kettle needs to be … in
  9. 11. the teapot must be … beforehand
  10. 12. according to Orwell, the older you get, the … your tea
  11. 13. English … is commonly said to be the worst in the world
  12. 17. … tea is Orwell’s choice of tea