Products

Product CO2e / kg Studies

Butter

11.422
CO2e / kg
= 100 g of Butter
You can consume
0.24
kg of Butter to exhaust your daily CO2e food budget

Categories: Dairy | Food

To make butter, about 20-25 liters of milk are needed [1][2] with 80-85% of the CO2e emissions coming from the raw milk production. The large variation in CO2e estimations for butter are a result of different ways in which the CO2e of milk is allocated according to fat and protein content.

For example, in Flysjö 2011, a ratio of 1:1.7 is used between fat and protein content to allocate emissions based on market value [4]. This means that only ~40% of the CO2e of the milk are allocated to the butter in this study, as butter is typically 80% fat and 4% protein. The rest of the emissions are then allocated to other milk products high in protein such as buttermilk. For Flysjö 2011, this leads to about 9 kg CO2e / kg of butter, while other studies report values well over 20 kg CO2e / kg.


[1] https://www.quora.com/What-is-the-amount-of-milk-used-in-making-one-kg-of-butter
[2] https://www.oldenburger-professional.com/from-chef-to-chef/faqs/how-much-milk-is-required-to-produce-1-kg-of-butter
[3] Flysjö, A. (2011). Potential for improving the carbon footprint of butter and blend products. Journal of dairy science, 94(12), 5833-5841.
[4] Fat and protein each make up about 4% of the milk weight. The remainder of the milk is 87% water and 5% lactose, neither of which has much market value.

Subcategories: Butter (eco)

Studies

Source CO2e Country origin Country consumption Weight
Large-scale regionalised LCA shows that plant-based fat spreads have a lower climate, land occupation and water scarcity impact than dairy butter
12.1
Unknown Unknown 5
Potential for improving the carbon footprint of butter and blend products
9.3
Denmark Denmark 10
Den store klimadatabase
3.92
Unknown Unknown 10
Mat-klimat-listan
8.0
Unknown Unknown 5
Klimatarier CO2 Rechner
9.2
Unknown Unknown 5
Pendos CO2-Zähler
23.8
Unknown Unknown 5
FiBL CO2-Fußabdruck von Bioprodukten
27.6
Austria Austria 5
Systematic review of greenhouse gas emissions for different fresh food categories
9.25
Unknown Unknown 10