Pineapple Bun with Butter

A Pineapple Bun with Butter, or 'Bo Lo Yau', is a beloved Hong Kong bakery staple. It consists of a soft, slightly sweet milk bread roll topped with a crunchy, buttery cookie crust, which is sliced open and filled with a thick slab of cold butter. Despite its name, the 'pineapple' refers solely to the crisscross pattern on the topping that resembles a pineapple's skin, not its flavor.

🍽️ Nutrition at a glance

This is a high-carb and high-fat treat, providing a quick energy boost primarily from refined flour and sugar, with significant fat from the butter in both the topping and filling. A single serving offers a substantial calorie load, mostly from simple carbohydrates and saturated fats, with minimal protein or fiber.

Nutrition breakdown

Calories	350 kcal
Protein	6 g
Carbs	45 g
Fat	17 g
Fiber	1 g
Sugar	18 g
Sodium	250 mg
Calcium	60 mg
Iron	2.5 mg
Potassium	100 mg
Vitamin B1 (Thiamin)	0.2 mg
Vitamin B2 (Riboflavin)	0.15 mg
Vitamin B3 (Niacin)	2 mg
Folate	40 µg
Phosphorus	80 mg

Per 1 bun (approx. 100 g) · estimated, varies by recipe

💡 What's interesting

The cultural intrigue lies in its name—a classic case of visual metaphor, as it contains no pineapple. Nutritionally, the unique contrast between the warm, soft bread and the cold, melting butter creates a sensory experience that has made it an iconic comfort food.