T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 1 – Arkady Leokum<\/p>\n\n\n\n
To\u00e0n th\u1ec3 d\u00e2n s\u1ed1 Hoa K\u1ef3 kho\u1ea3ng h\u01a1n 200 tri\u1ec7u. V\u1eady m\u00e0 m\u1ed7i n\u0103m h\u1ecd \u201cn\u00edch\u201d v\u00e0o b\u1ee5ng kho\u1ea3ng 600 tri\u1ec7u l\u00edt kem (quart l\u00e0 1\/4 gallon t\u1ee9c l\u00e0 m\u1ed9t c\u00e1i th\u00f9ng ch\u1ee9a kho\u1ea3ng 1,2 l\u00edt). Th\u1ea5y d\u00e2n M\u1ef9 ti\u00eau th\u1ee5 kem d\u1eef d\u1ed9i nh\u01b0 v\u1eady, nhi\u1ec1u ng\u01b0\u1eddi c\u1ee9 t\u01b0\u1edfng kem \u0111\u00e3 \u0111\u01b0\u1ee3c \u201cph\u00e1t minh\u201d t\u1ea1i n\u01b0\u1edbc M\u1ef9? L\u1ea7m! N\u1ebfu kh\u00f4ng \u1edf n\u01b0\u1edbc M\u1ef9 th\u00ec c\u0169ng \u1edf m\u1ed9t x\u1ee9 s\u1edf l\u1ea1nh l\u1ebdo n\u00e0o b\u00ean ch\u00e2u \u00c2u? C\u0169ng kh\u00f4ng ph\u1ea3i! Kem c\u00f3 m\u1ed9t xu\u1ea5t x\u1ee9 h\u1ebft s\u1ee9c b\u1ea5t ng\u1edd: b\u00ean ph\u01b0\u01a1ng \u0111\u00f4ng, t\u1ee9c l\u00e0 b\u00ean ch\u00e2u \u00c1 \u0111\u1ea5y. C\u00e1c b\u1ea1n bi\u1ebft nh\u00e0 h\u00e0ng h\u1ea3i ng\u01b0\u1eddi th\u00e0nh ph\u1ed1 Venice t\u00ean l\u00e0 Marco Polo (1254-1324) ch\u1ee9? T\u1eeb th\u1eddi \u0111\u00f3 \u00f4ng \u0111\u00e3 l\u01b0u l\u1ea1c sang \u0111\u1ebfn b\u00ean Trung Hoa, l\u1ea7n m\u00f2 l\u00ean \u0111\u1ebfn n\u01b0\u1edbc M\u00f4ng C\u1ed5, th\u1ea5y d\u00e2n \u1edf \u0111\u00e2y \u0103n c\u00e1i m\u00f3n m\u00e0 ng\u00e0y nay ta g\u1ecdi l\u00e0 \u201ckem\u201d. Th\u1ea5y kho\u00e1i kh\u1ea9u n\u00ean l\u00fac tr\u1edf v\u1ec1 \u00dd,<\/p>\n\n\n\n
Marco Polo d\u1ea1y cho b\u00e0 con \u00dd c\u1ee7a m\u00ecnh c\u00e1ch l\u00e0m. T\u1eeb \u00dd, kem lan tr\u00e0n sang Ph\u00e1p. D\u00e2n Ph\u00e1p b\u00e9n m\u00f9i c\u0169ng \u201cl\u1eadm\u201d c\u00e1i m\u00f3n n\u00e0y. Nh\u01b0ng ch\u1ec9 ph\u1ed5 bi\u1ebfn trong d\u00e2n sang th\u00f4i. B\u1edfi v\u00ec, \u0111\u00e1m d\u00e2n sang n\u00e0y gi\u1eef k\u1ef9 b\u00ed quy\u1ebft l\u00e0m kem kh\u00f4ng cho gi\u1edbi d\u00e2n d\u00e3 bi\u1ebft. Nh\u01b0ng d\u1ea5u m\u00e3i th\u1ebf n\u00e0o \u0111\u01b0\u1ee3c? D\u00e2n sang ch\u1ec9 \u0103n kem th\u00ec nhi\u1ec1u ch\u1ee9 c\u00f3 bao gi\u1edd ch\u1ecbu b\u1ecf s\u1ee9c lao \u0111\u1ed9ng ra l\u00e0m kem. Anh b\u1ed3i, ch\u1ecb b\u1ebfp l\u00e0m kem. Th\u1ebf l\u00e0 qua anh b\u1ed3i, ch\u1ecb b\u1ebfp, b\u00ed quy\u1ebft l\u00e0m kem ch\u1eb3ng c\u00f2n \u201cb\u00ed\u201d \u0111\u01b0\u1ee3c n\u1eefa m\u00e0 lan r\u1ed9ng kh\u1eafp n\u01b0\u1edbc Ph\u00e1p. T\u1eeb \u0111\u00f3 lan r\u1ed9ng kh\u1eafp th\u1ebf gi\u1edbi.<\/p>\n\n\n\n
Nh\u01b0ng c\u00e1i \u201cx\u00ed nghi\u1ec7p\u201d l\u00e0m kem \u0111\u1ea7u ti\u00ean tr\u00ean th\u1ebf gi\u1edbi l\u1ea1i l\u00e0 \u1edf b\u00ean Hoa K\u1ef3, t\u1ea1i th\u00e0nh ph\u1ed1 Baltimore, bang Maryland t\u1eeb n\u0103m 1815. Tuy v\u1eady, s\u1ef1 ph\u00e1t tri\u1ec3n th\u1eadt s\u1ef1 c\u1ee7a c\u00e1c \u201cx\u00ed nghi\u1ec7p\u201d s\u1ea3n xu\u1ea5t kem c\u0169ng ch\u1ec9 m\u1edbi b\u00f9ng n\u1ed5 h\u1ed3i \u0111\u1ea7u th\u1ebf k\u1ef7 XX n\u00e0y, khi m\u00e1y l\u00e0m l\u1ea1nh ra \u0111\u1eddi.<\/p>\n\n\n\n
Nguy\u00ean li\u1ec7u c\u01a1 b\u1ea3n c\u1ee7a kem – t\u1ea5t nhi\u00ean ph\u1ea3i k\u1ec3 kem th\u1ee9 thi\u1ec7t ch\u1ee9 kh\u00f4ng ph\u1ea3i ch\u1ec9 l\u00e0 b\u1ed9t, \u0111\u01b0\u1eddng h\u00f3a h\u1ecdc, m\u00e0u v\u00e0 n\u01b0\u1edbc r\u1ed3i b\u1ecf v\u00f4 t\u1ee7 l\u1ea1nh – l\u00e0 s\u1eefa \u0111\u1eb7c, \u0111\u01b0\u1eddng v\u00e0 ch\u00fat \u00edt tr\u1ee9ng. Vani, s\u00f4c\u00f4la, d\u00e2u, c\u00e1c ph\u1ee5 gia nh\u01b0 tr\u00e1i c\u00e2y\u2026 m\u1edbi ch\u1ec9 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o cho th\u00eam ph\u1ea7n h\u01b0\u01a1ng v\u1ecb v\u00e0 h\u1ea5p d\u1eabn. T\u1ef7 l\u1ec7 c\u00e1c ch\u1ea5t li\u1ec7u l\u00e0m kem \u201cth\u1ee9 thi\u1ec7t\u201d \u0111\u1ea1i kh\u00e1i nh\u01b0 th\u1ebf n\u00e0y: 80% \u0111\u1ebfn 85% l\u00e0 s\u1eefa c\u00f4 \u0111\u1eb7c \u0111\u1eb7c m\u1ed9t ch\u00fat, nh\u01b0ng kh\u00f4ng \u201ckh\u00f4\u201d, 15% l\u00e0 \u0111\u01b0\u1eddng. S\u1ed1 c\u00f2n l\u1ea1i l\u00e0 c\u00e1c ph\u1ee5 gia nh\u01b0 tr\u00e1i c\u00e2y xay nhuy\u1ec5n, 0,5% b\u1ed9t v\u00e0 m\u1ed9t ch\u00fat ch\u1ea5t \u0111\u1ec3 l\u00e0m cho kem \u201cqu\u00e1nh\u201d l\u1ea1i.<\/p>\n\n\n\n
C\u00e1c ch\u1ea5t l\u00e0m \u201cqu\u00e1nh\u201d (stabilizer) ch\u1ec9 l\u00e0 \u0111\u1ec3 cho m\u1eb7t kem nh\u1eb5n m\u1ecbn. Ng\u01b0\u1eddi ta th\u01b0\u1eddng d\u00f9ng ch\u1ea5t gelatin nguy\u00ean ch\u1ea5t d\u00f9ng cho vi\u1ec7c ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m \u0111\u1ec3 l\u00e0m \u201cqu\u00e1nh\u201d kem.<\/p>\n\n\n\n
\u0102n m\u1ed9t ly kem nh\u01b0 v\u1eady c\u00f3 b\u1ed5 b\u00e9o g\u00ec kh\u00f4ng? B\u1ed5 l\u1eafm: kem c\u00f3 ch\u1ea5t v\u00f4i, protein, vitamin A, B. S\u1ed1 l\u01b0\u1ee3ng calorie do m\u1ed9t ly kem cung c\u1ea5p ch\u1eafc ch\u1eafn kh\u00f4ng thua g\u00ec m\u1ed9t ly s\u1eefa.<\/p>\n","protected":false},"excerpt":{"rendered":"
T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 1 – Arkady Leokum To\u00e0n th\u1ec3 d\u00e2n s\u1ed1 Hoa K\u1ef3 kho\u1ea3ng h\u01a1n 200 tri\u1ec7u. V\u1eady m\u00e0 m\u1ed7i n\u0103m h\u1ecd \u201cn\u00edch\u201d v\u00e0o b\u1ee5ng kho\u1ea3ng 600 tri\u1ec7u l\u00edt kem (quart l\u00e0 1\/4 gallon t\u1ee9c l\u00e0 m\u1ed9t c\u00e1i th\u00f9ng ch\u1ee9a kho\u1ea3ng 1,2 l\u00edt). Th\u1ea5y d\u00e2n M\u1ef9 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15],"tags":[],"class_list":["post-13634","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/13634","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=13634"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/13634\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=13634"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=13634"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=13634"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}