Vietnamese butter roasting (rang bơ)
process / process-vietnamese-butter-roasting
ベトナムのバター焙煎（ラン・ボー）
Vietnamese butter roasting (rang bơ) is a technique that roasts Vietnamese Robusta beans over a wood fire with butter, salt, and a little liquor. It accompanies the (cà phê vợt; in translation: "cloth-filtered coffee") culture of Cholon in Saigon (Ho Chi Minh City).
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Reading the bitterness
Vietnamese 「カフェ・ヴォット」 (cà phê vợt) culture refers to brewing coffee through a cloth filter (vợt) in the Cholon district of Saigon (now Ho Chi Minh City). Within it, a technique called 「rang bơ(バター焙煎)」 (rang bơ; in translation: "butter roasting") has roasted Robusta beans over a wood fire with butter, salt, and a little liquor. Long-established shops include 「バー・ルー」 (Ba Lù), 「ヴォット・カフェ」 (Vợt Cafe), and 「チェオ・レオ・カフェ」 (Cheo Leo Cafe); Ba Lù is described as having about 70 years of history. The consulted articles do not specify which Chinese dialect group introduced the technique or when.
Adding butter, salt, and a little liquor while roasting over wood fire characterizes this method. An article relaying the long-established Ba Lù shop's explanation says these ingredients soften the beans' 「vị chát(渋み・粗さ)」 (in translation: "astringency, roughness"). The original word is "vị chát", not 「vị đắng(苦味)」 (in translation: "bitterness"): this account does not claim a reduction in bitterness itself, but records the shop's view about astringency and roughness. Another article describes the same blend only as adding a distinctive aroma and does not address effects on bitterness or astringency.
Sources for this overview
Quán cà phê vợt, rang bằng củi 70 năm thức cùng hẻm chợ
Checked for this overview: Used the account of Ba Lù's years in business to support this paragraph. / Used Ba Lù's account concerning vị chát to support this paragraph.
3 quán cà phê vợt lâu đời nhất Sài Gòn
Checked for this overview: Used the article introducing the 3 long-established shops to support this paragraph. / Used the article describing the practice as aroma addition to support this paragraph.
Other names: cà phê rang bơ (vi), cà phê vợt (vi)
Follow the connections
coffee brew →is processed by→ Vietnamese butter roasting (rang bơ)
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: Vietnam, Cholon district, Saigon (Ho Chi Minh City)
Show data
ingredient-coffee-brew —is_processed_by→ process-vietnamese-butter-roastingScope: A long-established cà phê vợt shop in Saigon's Cholon district (Ba Lù, founded about 70 years ago)
Note: The original term is "vị chát," not "vị đắng" (bitterness). This is not a claim about a reduction in bitterness itself; it is included as the shop's own account concerning astringency and roughness (it is not reworded as bitterness).
Show data
process-vietnamese-butter-roasting —has_composition→ "Butter, salt, and a small amount of alcohol are added while roasting over a wood fire. The Ba Lù shop explains that adding these ingredients softens the beans' "vị chát" (astringency, roughness)."Culture (1)
Scope: Saigon's Cholon district
Note: The articles do not clearly state when or which Chinese dialect group brought this practice (the Ba Lù shop mentions only a history of "about 70 years"). This is not treated as a settled origin story (the question is separated out to leads as a research question).
Show data
process-vietnamese-butter-roasting —has_cultural_role_of→ "A roasting method carried on as part of "cà phê vợt" culture — filtering coffee through a cloth strainer (vợt) — passed down in the Chinese community of Saigon (present-day Ho Chi Minh City)'s Cholon district. Long-established shops such as Ba Lù, Vợt Cafe, and Cheo Leo Cafe are known for it."