White Sugar (Granulated)

White Sugar (Granulated): Nutrition, History and Complete Guide

Granulated white sugar — sucrose, C₁₂H₂₂O₁₁ — is the world's most widely produced and consumed sweetener and one of the most globally significant agricultural commodities. Sucrose is a disaccharide composed of glucose and fructose bonded together, extracted primarily from sugar cane (Saccharum officinarum) or sugar beet (Beta vulgaris subsp. vulgaris) and refined to the essentially pure white crystals familiar from every kitchen. Sugar cane was first domesticated in New Guinea approximately eight to ten thousand years ago and spread through Asia before reaching the Middle East; the first crystalline sugar was produced in India around 600 BCE. Arab traders spread sugar refinement techniques west through the medieval period; the Crusades introduced sugar to northern Europe; and the subsequent European colonial plantation system — with its catastrophic human cost of enslaved labour across the Caribbean, Brazil, and the American South — made sugar globally cheap and ubiquitous by the eighteenth century. Today sugar consumption and its relationship to obesity, dental caries, and metabolic disease is one of the most significant public health issues globally.

Nutritional Value

White granulated sugar provides 387 kcal and 99.98 g of carbohydrates per 100 g — essentially pure sucrose. It contains no protein, no fat, no fibre, no vitamins, and no minerals — it is purely an energy source. A typical teaspoon of sugar (approximately 4 g) provides 16 kcal. The free sugars in white sugar (sucrose, which rapidly breaks down to glucose and fructose in digestion) are the form most strongly associated with dental caries, blood glucose spikes, and — when consumed in excess of energy requirements — weight gain and metabolic disruption.

Health Context

The World Health Organisation and UK health guidance recommend limiting free sugars (all added sugars plus those naturally present in honey, syrups, and fruit juice) to less than 10% of daily energy intake — approximately 50 g for an average adult — with a further benefit below 5%. This does not require eliminating sugar but prioritising its use where it contributes most to eating pleasure relative to quantity. Dental caries is caused by sugar consumption frequency as much as total quantity — reducing the number of sugar exposures per day (rather than just total sugar) is an important practical strategy. The glycaemic index of sugar (approximately 65) is moderate — lower than many starchy foods. Moderation and context matter far more than categorical avoidance.

How to Use White Sugar

Sugar has numerous irreplaceable functional roles in cooking beyond sweetness: it browns through caramelisation (above 160°C) and the Maillard reaction; it tenderises gluten in baked goods; it preserves (jams, preserves); it stabilises egg foams; and it balances acidity and bitterness. For baking: standard granulated sugar or caster sugar (finer grind, dissolves more quickly) are interchangeable in most recipes. For caramel: dry caramel (no water, sugar melted directly) or wet caramel (sugar dissolved in water then cooked to temperature) — both produce the same result through different routes.