Coca-Cola India revives diet coke in glass bottles as aluminum can supply chain faces structural vulnerability

INDIA – Coca-Cola has reintroduced Diet Coke in 200 ml glass bottles in India, priced at INR100 (approximately US$1.03) for a six-pack, as aluminum can supply chains face disruptions due to India’s lack of domestic can-body stock production.

Previously, Diet Coke was available only in aluminum cans in India, with 300 ml cans retailing at INR40 (approximately US$0.41) and 200 ml cans at INR30 (approximately US$0.31). 

The price of the relaunched glass bottle version is higher than previous aluminum options, sparking consumer debate over premium pricing.

The Structural Vulnerability of India’s Aluminum Can Supply

Tanishq, a research associate at Sheshi, an AI-powered fintech company based in India, explained that India’s aluminum output is overwhelmingly upstream, but the downstream sector, rolling mills, surface-treatment lines, and alloy laboratories that transform ingots into can-body stock, is underdeveloped. 

Can-body stock is not produced domestically at any significant volume, forcing beverage-can manufacturers to import the substrate from global suppliers, primarily in the Middle East and East Asia. 

The Diet Coke shortage was a real-time validation of this structural vulnerability: when global aluminum supply chains tightened due to the blockade of the Strait of Hormuz, India had no domestic fallback.

Glass as a Strategic Alternative

The reintroduction of glass bottles for Diet Coke reflects a broader industry response to aluminum supply uncertainty. 

Glass bottles are produced domestically in India, with established manufacturing capacity and supply chains that do not rely on imported feedstock. 

However, glass is heavier and more fragile than aluminum, increasing transport costs and breakage risk. 

The higher retail price of the glass bottle Diet Coke reflects these logistics disadvantages. 

Last month, the base price of aluminum per ton hit a four-year high, and brewers in India warned of glass bottle and aluminum can price increases due to the prolonged blockade of the Strait of Hormuz.

The Bottleneck Isn’t Raw Aluminum

For the Indian aluminum can industry, the bottleneck is not in producing raw aluminum but in turning it into finished cans. 

According to Tanishq, until can-stock production is treated as strategic packaging infrastructure, private capital will continue to flow into safer, commoditized aluminum segments. 

The current disruption highlights the difference between primary aluminium production (smelting) and downstream can manufacturing, which requires rolling mills and coating lines that India lacks at scale.

Packaging Infrastructure as Strategic Asset

The Diet Coke glass bottle reintroduction is not a permanent shift but a contingency measure, maintaining product availability while the aluminum supply chain stabilises.

Coca-Cola India recently launched its Affordable Small Sparkling Package bottle type made with 100 percent recycled PET, manufactured by Coca-Cola’s bottling partner, Hindustan Coca-Cola Beverages.

Subscribe to our email newsletters that provide busy executives like you with the latest news insights and trends from Africa and the World. SUBSCRIBE HERE