If the free tweaks don't help, you might be working with something that needs upgrading. But that doesn't mean you need to splurge.

Your matcha might be old or low-quality. Ceremonial matcha that's been opened for more than two months loses its vibrancy and frothing ability. Oxygen and light degrade it. If your matcha looks dull or smells grassy rather than sweet, it's likely past its prime. Consider buying smaller tins so you finish them before they go stale.

Your whisk might not be up to the task. A bamboo chasen with many flexible tines is ideal, but a basic kitchen whisk can work too. If your whisk is too stiff or has too few tines, you'll struggle to get froth. You can buy a decent bamboo whisk for a few dollars, or try an electric milk frother—even a cheap one can whip up matcha foam quickly.

Your water might be too hard. Mineral-heavy water can affect froth stability. If you have hard tap water, try filtered or bottled water. It's not a guarantee, but it can make a difference.