Weird black and white

i follow Guru Blender tutorial showing you how to make glass and liquid

and someway this happens
its ugly

help please?

Looks like you just need to recalculate you’re normals.

how do i do that?

Select All
CTRL N

that just ask if i want to create a new file

Try SHIFT CTRL N

I dunno what hotkeys you have. If you’ve changed them from default, then It could be something else.

Google is your friend :slight_smile:

The shortcut you need is Shift+N in Edit mode

Shift+Ctrl+N is not what you want or need. It’s what you would use perhaps on a cube if you were intending to view the cube only from inside it (like a room perhaps)