Provide advice on how to accomplish the following goal. Give ONLY the advice, no other words or explanation.
For example:

Answer: <advice, as short as possible; a single sentence!>.

Goal: To put custard inside of a donut
Poke a hole through the side of the donut and insert your piping tip and bag and squeeze the custard inside of the donut.
Poke a hole in the donut, fill with custard.