Skip to content
Discebo.dk

§ 16

Climate footprint per serving

How large is the climate footprint of one serving of my dish, and where does it come from?

Answer: A dish's climate footprint is the sum of each raw material's weight times the material's climate figure in kg CO2e per kg. You look up the climate figures yourself in The Big Climate Database, which CONCITO made together with the Danish Food Agency. The calculator splits the dish into three parts: protein, starch/accompaniment and greens. It shows the footprint per serving, how large a share the protein part is, and the footprint for the whole production. The default values are examples. Look up the raw materials you actually use.

Formula

Aftryk pr. portion (kg CO2e) = Σ (råvarens gram ÷ 1000 × råvarens klimatal i kg CO2e pr. kg)

Proteindelens andel = proteindelens aftryk ÷ hele portionens aftryk × 100

Produktion = aftryk pr. portion × antal portioner

Climate figures are per kg raw material as purchased (incl. farming, processing, transport and packaging). Examples from The Large Climate Database: minced beef approx. 32.5, minced chicken approx. 3.8, potatoes approx. 0.36 and carrots approx. 0.2-0.25 kg CO₂e per kg. Always look up the version you use.

Symbols and units in the formula
SymbolMeaningUnit
protein_gProtein portion per serving (meat, fish, eggs, legumes)g
protein_co2Climate figure for protein portion (from database)kg CO2e/kg
tilbehoer_gStarch/accompaniment per portion (potatoes, rice, pasta, bread)g
tilbehoer_co2Climate figure for accessorieskg CO2e/kg
groent_gGrontsager pr. portiong
groent_co2Climate figure for vegetableskg CO2e/kg
portionerNumber of portions in productionportioner
=Climate footprint per servingkg CO2e
=Protein portion's share of the footprint%
=Climate footprint for the whole productionkg CO2e
=Climate footprint per kg finished dishkg CO2e/kg
=Portion weightg

Validity and source

Source
The Large Climate Database (CONCITO and Food and Veterinary Authority) · competency aim «calculate meals' climate footprint»

Does not apply when

  • Calculate with the raw weight you buy and use not the prepared. If the dish has multiple raw materials in the same group use a weighted average of their climate numbers or calculate them each. Fat dairy products and spices can go in the group they look most like.

Worked example

The calculator's own default values inserted. The figures are calculated with exactly the formula the tool uses.

Substituted

  • Protein portion per serving (meat, fish, eggs, legumes)150 g
  • Climate figure for protein portion (from database)32.50 kg CO2e/kg
  • Starch/accompaniment per portion (potatoes, rice, pasta, bread)250 g
  • Climate figure for accessories0.36 kg CO2e/kg
  • Grontsager pr. portion150 g
  • Climate figure for vegetables0.25 kg CO2e/kg
  • Number of portions in production100 portioner

Giver

  • Climate footprint per serving5.00 kg CO2e
  • Protein portion's share of the footprint97 %
  • Climate footprint for the whole production500 kg CO2e
  • Climate footprint per kg finished dish9.10 kg CO2e/kg
  • Portion weight550 g

Members only

The calculator itself is locked

Create a free user account to unlock all articles, calculators, templates and range — and get access to quizzes and classes. It takes less than a minute: name, email and a password. No payment card.

Create free user →Log in

Want to try something first? See what you can use without an account — the junior zone, the encyclopedia, the videos and more.

Sådan bruger du den

Kunder, kantinekunder og kommuner spørger i stigende grad til klimaaftrykket. Når du udvikler en ret eller sammenligner to versioner af den, skal du kunne regne kg CO2e pr. portion. Beregneren ganger råvarernes gram med deres klimatal fra Den Store Klimadatabase og viser, hvor meget proteindelen betyder.

Step by step

  1. Vej portionens råvarer, rå og som du bruger dem: protein, stivelse og grønt.
  2. Slå klimatallet op for hver råvare i Den Store Klimadatabase (kg CO2e pr. kg).
  3. Gang hver råvares gram med dens klimatal, og del med 1.000.
  4. Læg de tre dele sammen. Det er aftrykket pr. portion.
  5. Se på proteindelens andel. Det er her, du flytter mest ved at bytte råvare eller mindske mængden.

Typical errors

  • At bruge tilberedt vægt med et klimatal for rå vare. Kogt ris og stegt kød vejer noget andet end det, du købte.
  • At blande klimatal fra forskellige databaser i samme ret. Tallene er regnet forskelligt.
  • At bruge mest tid på grøntsagerne. I en ret med kød står kødet næsten altid for over 80 %.
  • At glemme ost, smør og fløde i saucen. Mejeriprodukter har et højere klimatal end grønt.

Examples from everyday life

Hakkebøf med kartofler og grønt

Kantinens hakkebøf har 150 g hakket oksekød, 250 g kartofler og 150 g gulerødder og ærter pr. portion. Opslaget gav ca. 32,5, 0,36 og 0,25 kg CO2e pr. kg. Der laves 100 portioner.

Protein portion per serving (meat, fish, eggs, legumes)
150 g
Climate figure for protein portion (from database)
32.5 kg CO2e/kg
Starch/accompaniment per portion (potatoes, rice, pasta, bread)
250 g
Climate figure for accessories
0.36 kg CO2e/kg
Grontsager pr. portion
150 g
Climate figure for vegetables
0.25 kg CO2e/kg
Number of portions in production
100 portioner

It means: Én portion har et aftryk på 5 kg CO2e, og kødet står for 97 % af det. Hele produktionen giver 500 kg CO2e.

Samme ret med hakket kylling

Du afprøver hakkebøffen med 150 g hakket kylling i stedet for okse. Opslaget for hakket kylling gav ca. 3,8 kg CO2e pr. kg. Resten er uændret.

Protein portion per serving (meat, fish, eggs, legumes)
150 g
Climate figure for protein portion (from database)
3.8 kg CO2e/kg
Starch/accompaniment per portion (potatoes, rice, pasta, bread)
250 g
Climate figure for accessories
0.36 kg CO2e/kg
Grontsager pr. portion
150 g
Climate figure for vegetables
0.25 kg CO2e/kg
Number of portions in production
100 portioner

It means: Nu er aftrykket 0.7 kg CO2e pr. portion, og proteindelen står for 82 %. De 100 portioner giver 70 kg CO2e. Det er omkring en syvendedel af okseversionen.

Halvt okse, halvt linser

En tredje version har 75 g oksekød og 75 g kogte linser, som du regner sammen som 150 g protein med et vægtet klimatal på ca. 17 kg CO2e pr. kg. Mere grønt, 200 g, og 200 g kartofler.

Protein portion per serving (meat, fish, eggs, legumes)
150 g
Climate figure for protein portion (from database)
17 kg CO2e/kg
Starch/accompaniment per portion (potatoes, rice, pasta, bread)
200 g
Climate figure for accessories
0.36 kg CO2e/kg
Grontsager pr. portion
200 g
Climate figure for vegetables
0.25 kg CO2e/kg
Number of portions in production
100 portioner

It means: Aftrykket er 2.67 kg CO2e pr. portion, og proteindelen står stadig for 95 %. Halvering af oksekødet næsten halverer aftrykket.

Rule of thumb

Oksekød ligger omkring 30 kg CO2e pr. kg, kylling og svin omkring 4-5, og kartofler og rodfrugter under 0,5. 100 g oksekød er derfor ca. 3 kg CO2e.

How to check the answer

Regn proteindelen alene: gram × klimatal ÷ 1.000. Den skal være lidt under det samlede tal pr. portion, når retten har kød.