karela pickle
seasoning / seasoning-karela-pickle
カレラ・ピクルス
Karela pickle is a candidate preserved food made by salt-curing bitter gourd in India. Process research exists, but regional formulations and the endpoint for bitterness require separate verification.
On this page (7 sections)
Reading the bitterness
In Indian oil pickles of bitter gourd, there are cases where the step of leaving the gourd to stand between salting and squeezing is written up as the step that removes bitterness. In a trial at an agricultural university in Maharashtra, bitter gourd with seeds and core removed was sprinkled with salt, left to stand, and squeezed to remove the brine, then combined with roasted and ground mustard, fenugreek, asafoetida, turmeric, and chili, 20% salt, and oil, and left in a jar for 2 weeks. The flow chart says the step of standing between salting and squeezing is to remove bitterness. However, the standing time differs, 2 hours in the text and 4 hours in the flow chart, and bitterness itself was not measured.
In a Malaysian study, bitter gourd was soaked in 3.5% brine at 25 °C for 60 minutes, rinsed, and blanched at 96 °C for 3 minutes before juicing; the bitterness of the juice was 10.6 on a 15 cm line scale, not significantly different from 10.7 for unsoaked fruit. Whether the unsoaked fruit was blanched in the same way is not recorded, so this cannot be called a comparison that isolates the effect of salt alone. Another Indian study compared 5 treatments, including soaking in brine for 60 minutes and then heating in water for 5 minutes up to 96 °C, and its abstract says this treatment gave the lowest saponin, 0.18 mg diosgenin equivalents/g. What was measured was the amount of saponin, and the abstract gives no bitterness score.
There is also a case of long soaking. A study at the Indian Agricultural Research Institute refined a preservation process that soaks bitter gourd ring slices in 10% brine at 30 °C for 12 hours with 0.9% citric acid and 0.1% KMS added, and records that, before and after it, the gravimetrically measured amount of bitter extract fell from 0.0117 to 0.0082% for Pusa Hybrid 1 and from 0.0125 to 0.0078% for Pusa Domousmi. No statistical test is attached, and it is not a human bitterness score. Meanwhile, another study that optimized the salting step for bitter gourd refined color, firmness, and water activity within the range of its abstract, and bitterness does not appear among its items. No study that measured the bitterness of the pickle itself before and after pickling was found within the range searched.
Sources for this overview
Formulation and sensory attributes of the pickle made from bitter gourd lemon and green chilli
Checked for this overview: Used to state the oil-pickle process, 20% salt and 2 weeks, that the flow chart says the standing step between salting and squeezing removes bitterness, the 2-hour versus 4-hour discrepancy, and that bitterness was not measured
Checked for this overview: Used to state that juice from fruit soaked in 3.5% brine at 25 °C for 60 minutes and blanched at 96 °C for 3 minutes showed no significant difference in bitterness (10.6 vs 10.7), and that the heating of the control is not recorded
Checked for this overview: Used to state that the brine-and-heating treatment in the abstract gave the lowest saponin, 0.18 mg diosgenin equivalents/g, and that the abstract gives no bitterness score
Standardization of a method for the development of hurdle processed bitter gourd rings
Checked for this overview: Used to state that before and after a preservation process of 10% brine, 30 °C, 12 hours with 0.9% citric acid and 0.1% KMS, the gravimetric amount of bitter extract fell, and that there is no statistical test
Checked for this overview: To state that the study of the salting step does not take bitterness as an item within the range of its abstract.
Follow the connections
karela pickle →is processed by→ bitter gourd salt curing
Hypotheses and recipe candidates for this entry are on the Japanese page.
Structured claims — open a section to read each claim's confidence, evidence and limits
How processing and cooking change it (2)
Scope: A study that examined, using response surface methodology, the salt-curing of bitter gourd (karela), regarded in India as a traditional process
Note: The optimal-condition values are not recorded here, as the full text has not been read. The broader role as a 『苦味調味料』 (in translation: "bitter seasoning") remains unverified.
Show data
seasoning-karela-pickle —is_processed_by→ process-bitter-gourd-salt-curingScope: Layer: literature. The trial process of 1 study at an agricultural university in Maharashtra
Note: The time the salted gourd is left to stand differs: 2 hours in the text and 4 hours in the flow chart. Bitterness was not measured.
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seasoning-karela-pickle —is_prepared_with→ (the claim sentence above)Culture (1)
Scope: A candidate at the level of general knowledge. Regional and naming differences have not been confirmed.
No source connected — this claim has not been verified yet. It is a general-knowledge placeholder, not a confirmed statement.
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seasoning-karela-pickle —is_used_as→ (the claim sentence above)