What causes and how to avoid Sichuan pepper 'Salty Tongue' effect?

The user enjoys Sichuan pepper but sometimes experiences a peculiar "salty tongue" effect when consuming it. This sensation makes everything taste excessively salty and oddly sour, similar to licking a battery. The experience is not consistent, as it doesn't always occur even with minimal amounts of the pepper. This phenomenon has significantly detracted from the user's enjoyment of Sichuan pepper. While some journalistic articles mention this effect, there appears to be limited scientific research on it. The user is seeking an explanation for the contributing factors, such as the combination of ingredients or cooking methods, that trigger this peculiar reaction. They are curious about what causes this unusual taste alteration. The "salty tongue" effect is a significant turn-off for the user. They are eager to understand the underlying reasons for its occurrence.