Boiling corn on the cob typically takes about 4 to 6 minutes once the water is boiling. Fresh corn cooks faster-around 5 minutes-while older or frozen corn may require a bit longer, roughly 8 to 10 minutes

Detailed guidance:

• Bring a large pot of water to a boil.
• Add the husked corn cobs to the boiling water.
• Boil for 4 to 6 minutes until the kernels turn bright yellow and are crisp-tender.
• For frozen corn on the cob, add 3 to 5 extra minutes to the cooking time.
• Avoid adding salt to the boiling water as it can toughen the kernels; instead, season the corn after cooking.
• Remove the corn with tongs and serve immediately with butter and salt if desired

This method ensures juicy, tender corn ready to enjoy as a classic side dish.