These are simple guidelines on how to re-use cooking/frying oil in catering, it's best not to consume fried foods and if you do, always use fresh oil. This only represents the authors personal and professional experience, plz always check your own sources for updates or recent scientific research updates. Thanks. Dr. Wessam Atif

1. Re- use cooking oil safely ‫ﺇﻋﺎﺩﺓ ﺍﺴﺘﺨﺩﺍﻡ ﺯﻴﺕ ﺍﻝﻁﻬﻲ ﺒﻁﺭﻴﻘﺔ ﺁﻤﻨﺔ‬
• Fry foods at 190°C, Not more ‫- ﺍﺴﺘﺨﺩﻡ ﺯﻴﺕ ﺍﻝﻘﻠﻲ ﻓﻘﻁ ﻋﻨﺩ ﺩﺭﺠﺔ ﺤﺭﺍﺭﺓ‬
not less [use a good
‫091 ﻤﺌﻭﻴﺔ ﻻ ﺃﻜﺜﺭ ﻭ ﻻ ﺃﻗل‬
thermometer]
• Turn off the heat as soon as you ‫- ﺍﻏﻠﻕ ﺍﻝﻨﺎﺭ )ﺍﻝﻤﻭﻗﺩ( ﻓﻭﺭ ﺍﻻﻨﺘﻬﺎﺀ ﻤﻥ ﺍﻝﻘﻠﻲ‬
are done cooking ‫- ﻻ ﺘﺨﻠﻁ ﺃﻨﻭﺍﻉ ﻤﺨﺘﻠﻔﺔ ﻤﻥ ﺍﻝﺯﻴﻭﺕ‬
• Do not mix different types of oil ‫- ﻻ ﺘﺨﻠﻁ ﺍﻝﺯﻴﺕ ﺍﻝﻤﺴﺘﻌﻤل ﺒﺎﻝﺯﻴﺕ ﺍﻝﻁﺎﺯﺝ‬
• Do not mix used oil with fresh oil ‫- ﻻ ﺘﻀﻊ ﻤﻠﺢ ﻝﻠﻁﻌﺎﻡ ﻗﺒل ﺍﻝﻘﻠﻲ‬
• Do not add salt to foods before ‫- ﻓﻲ ﺤﺎﻝﺔ ﻋﺩﻡ ﺍﻻﺴﺘﺨﺩﺍﻡ: ﻗﻡ ﺒﺘﺨﺯﻴﻥ ﺍﻝﺯﻴﺕ‬
frying ‫ﻓﻲ ﻤﻜﺎﻥ ﺠﺎﻑ ﻭ ﺒﺎﺭﺩ ﻭ ﻏﻴﺭ ﻤﻀﺎﺀ: ﺍﻝﺜﻼﺠﺔ‬
• Always store oil when not used
in a cool dark place; the fridge
‫- ﻗﻡ ﺒﺘﻐﻁﻴﺔ ﺍﻝﺯﻴﺕ ﻓﻲ ﺤﺎل ﻋﺩﻡ ﺍﻻﺴﺘﺨﺩﺍﻡ ﺃﻭ‬
• Cover the oil when stored ‫ﺍﻝﺘﺨﺯﻴﻥ‬
• Filter the oil through cheesecloth ‫- ﻴﺠﺏ ﺘﻨﻘﻴﺔ )ﻓﻠﺘﺭﺓ( ﺍﻝﺯﻴﺕ ﺍﻝﻤﺨﺯﻭﻥ ﻗﺒل ﺇﻋﺎﺩﺓ‬
or filter papers before re-use ‫ﺍﻻﺴﺘﺨﺩﺍﻡ ﻋﻥ ﻁﺭﻴﻕ ﻗﻤﻊ ﻭ ﻗﻁﻌﺔ ﺸﺎﺵ ﻜﺒﻴﺭﺓ‬
‫ﺃﻭ ﻭﺭﻕ ﻓﻠﺘﺭﺓ‬
When to change the oil? ‫؟‬ ‫ا‬ ‫ز‬
• If Oil darkens in color ‫- ﻋﻨﺩ ﺘﺤﻭل ﻝﻭﻥ ﺍﻝﺯﻴﺕ ﺇﻝﻰ ﺍﻝﻠﻭﻥ ﺍﻝﺩﺍﻜﻥ‬
• If the oil has OFF smell or ‫- ﻋﻨﺩ ﻅﻬﻭﺭ ﺭﺍﺌﺤﺔ ﻏﻴﺭ ﻤﺴﺘﺤﺒﺔ ﺃﻭ ﻋﻨﺩﻡ‬
smells like the food cooked in it
‫ﺘﻜﻭﻥ ﺭﺍﺌﺤﺔ ﺍﻝﺯﻴﺕ ﻤﺸﺎﺒﻬﺔ ﻝﺭﺍﺌﺤﺔ ﺍﻝﻁﻌﺎﻡ‬
• If smoke appears on the oil’s
surface before 190°C ‫ﺍﻝﻤﻁﻬﻲ ﻓﻴﻪ‬
• If you see loose particles ‫- ﻋﻨﺩ ﺘﺼﺎﻋﺩ ﺩﺨﺎﻥ ﻤﻥ ﺴﻁﺢ ﺍﻝﺯﻴﺕ ﻗﺒل‬
suspended in the oil or collected ‫ﺩﺭﺠﺔ 091 ﻤﺌﻭﻴﺔ‬
at the bottom of the container ‫- ﻋﻨﺩ ﻭﺠﻭﺩ ﺸﻭﺍﺌﺏ ﻤﻌﻠﻘﺔ ﻓﻲ ﺍﻝﺯﻴﺕ ﺃﻭ‬
• If oil pours more slowly; ‫ﺭﻭﺍﺴﺏ‬
increased viscosity
‫- ﻋﻨﺩ ﺯﻴﺎﺩﺓ ﻝﺯﻭﺠﺔ ﺍﻝﺯﻴﺕ ﺒﻁﺭﻴﻘﺔ ﻤﻠﺤﻭﻅﺔ‬
Best tip to re-use cooking oil ‫ﺃﻓﻀل ﻨﺼﻴﺤﺔ ﻹﻋﺎﺩﺓ ﺍﺴﺘﺨﺩﺍﻡ ﺯﻴﺕ ﺍﻝﻁﻬﻲ‬
NEVER RE-USE COOKING OIL! !‫أ ا‬ ‫ا‬ ‫ام ز‬ ‫ا‬
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Dr. Wessam Atif ‫د/و م‬
Crew 1771 1771