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A mix of 50 % sheep, 25 % goat and 25 % cow milk is warmed to 57–62 °C, cooled and set with rennet at 38–40 °C, then the curd is broken to chickpea size, pressed, cut into blocks and dry-salted. After up to 4 days of pre-ripening to pH 5.00–5.20 the blocks are packed in tins under a heated whey brine of 13–14 °Bé. Despite the tulum (skin bag) name, it ripens in sealed tins at 2–4 °C for at least 4 months.
none added; a 2023 study describes brined İzmir tulum as made without starter culture, and the registered method allows only milk, rennet and salt
Total time across the recorded steps: 4.1 months
Start
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What changes:The mixed milk is warmed quickly to 57–62 °C, then cooled
Step 1 of 7
Warm the milk
Time
Not documented
Temperature
57–62 °C
Set
Salt
None given
Acidity
Not documented
Which microbes the steps name, step by step
S. infantarius
S. thermophilus
Lactic acid bacteria
Flavour
Not documented
Texture
Not documented
Colour
Not documented
Microbes at work in this step
Not documented for this step.
Method
Measured measured in a studySet fixed by a specification or tested recipeReported one source reports itTypical a general value, not sourced for this fermentUnconfirmed not yet checked against a source
At a glance
A mix of 50 % sheep, 25 % goat and 25 % cow milk is warmed to 57–62 °C, cooled and set with rennet at 38–40 °C, then the curd is broken to chickpea size, pressed, cut into blocks and dry-salted. After up to 4 days of pre-ripening to pH 5.00–5.20 the blocks are packed in tins under a heated whey brine of 13–14 °Bé. Despite the tulum (skin bag) name, it ripens in sealed tins at 2–4 °C for at least 4 months. Made in 7 steps over 4.1 months. The longest step, ripen cold, takes at least 4 months (Türk Patent ve Marka Kurumu 2022) and runs at 2–4 °C (Türk Patent ve Marka Kurumu 2022). Streptococcus infantarius subsp. infantarius, identified as the main acid producer in İzmir brined tulum and Streptococcus thermophilus, among the two most abundant species in commercial İzmir tulum and İzmir brined tulum do most of the fermenting.
The industrial heir of the Aegean skin-bag tulum, made from a fixed sheep, goat and cow milk mix and ripened in brine in sealed tins instead of a skin. The registered method has no curd cooking.
Composition
pH 4.01–4.92, dry matter 49.92–71.85 %, fat 17.50–32.00 %, salt 1.87–5.27 %, protein 20.99–27.50 %
Salt limit
Salt at most 7.5 % of dry matter, under the Turkish Food Codex cheese communiqué
The milk is only warmed to 57–62 °C, and the brine is heated to 85 °C for 15 minutes before use. The cheese ripens at least 4 months at 2–4 °C, and finished salt is capped at 7.5 % of dry matter.
The registration was applied for by the İzmir Chamber of Commerce in 2010 and granted in 2022. A study notes that skin bags ran short for industrial production, so the cheese moved into brine in sealed tins; small-scale skin-bag İzmir tulum is still made.