2. The fake duck blood is light red with bright color.

3. Observing the stomata, the true duck blood slices are irregular and sparse, while the fake duck blood slices are smooth and no stomata can be seen.

4, smell the smell, real duck blood has a faint smell, fake duck blood does not.

5, look at the state, really duck blood is fragile, pinched into strips. Fake ones are more solidified, not fragile and not caked.

6, taste duck blood, really duck blood tastes a bit sticky, tender and has the taste of duck, fake duck blood tastes a bit like eating jelly, and the taste is very hard.