How to tell the coffee products from the coffee shop?

If the coffee maker uses a high-end coffee maker:

1) did they grind the beans especially for you, or did they grind them first?

2) how good is the coffee? A cup of coffee should be above 85 degrees.

3) can the coffee oil on the coffee cover the whole cup of coffee? If not, the coffee beans must be very stale.

4) do you beat the foam on the top of the bag? You shouldn't see a bubble.

If the coffee maker uses a siphon:

* siphon siphon requires high control skills *

1) did they grind the beans especially for you, or did they grind them first?

2) how long has the water been boiled from the bottom to the top? If it exceeds one minute, the coffee must be bitter and bitter.

3) how to mix coffee after the water runs from the bottom to the top? If the sauce is mixed very hard or quickly, the coffee will become coarse.

4) is the coffee grounds scented after cooking? A successful siphon will boil the fragrance into the coffee, and the coffee grounds are not fragrant.