Why does your white chocolate melt with lumps in it?

White chocolate can melt with lumps due to several factors, such as the presence of moisture, which can cause the cocoa butter to seize and clump. Additionally, overheating can cause the fats to separate, leading to a grainy texture. Using low-quality white chocolate with additives or improper melting techniques can also contribute to this issue. To achieve a smooth melt, it's best to use high-quality chocolate and melt it gently using a double boiler or microwave at low power.