When creating an asset that has liquid bare in mind Dielectic priorities. This arnold site explains it here, essentially, there are three priorities. This will be the liquid (1), then Ice (2), and the glass/plastic (3). This is set in the standard surface when you're in the look.

The diagram above shows the priority order. It also shows that the liquid geo needs to slightly intersect with the glass or plastic geo.

Depending on the liquid these settings may vary but for the example I used these. And then in the out context I bumped the ray depth to these settings:

The amount will again vary depending on the liquid, ice and glass, but these are the settings I used for my example.