I want to know the answer to the following question:
How can electrolytic capacitors be safely used after having been stored unused for a long time?
All the background I'm provided with is that "They can be restored before use (and damage) by gradually applying the operating voltage, often done on antique vacuum tube equipment over a period of 30 minutes by using a variable transformer to supply AC power.". Is that enough to answer the question?
Answer: yes