Mae Ploy yellow curry paste is a pre-made Thai curry paste manufactured by Mae Ploy, a well-known Thai brand. It's a complex blend of ingredients that typically includes:
Key ingredients:

Dried yellow chilies, which give it a golden color and moderate heat level
Lemongrass
Galangal
Garlic
Shallots
Kaffir lime peel
Turmeric, which enhances the yellow color
Coriander seeds
Cumin
White pepper
Salt

The paste has a rich, aromatic flavour profile that balances heat, citrus, and earthy spices. It's generally milder than red or green curry pastes, making it more approachable for those who prefer less spicy dishes.
Most commonly, this curry paste is used to make Gaeng Garee (Thai yellow curry), often cooked with coconut milk and proteins like chicken, along with potatoes and onions. It's also used in Thai Muslim cuisine, showing influences from Indian curry traditions.
When cooking with it, a little goes a long way - typically 2-3 tablespoons of paste is sufficient for a curry that serves 4-6 people. The paste comes in sealed containers and can last several months when refrigerated after opening.