网上搜索的时候，看见这两张萌图，正好收藏一下，今天只研究了左半边
网上搜索的时候，看见这两张萌图，正好收藏一下，以后研究橙、橘、柚时候用
先从柠檬🍋说起， 最常见的柠檬— Eureka& Lisbon 最常见超市卖的淡黄色🍋，这两种柠檬味道不差多少，都是你现在想象中最先出现的那种酸酸酸酸的柠檬，汁多糖分少。 这两种细分的话，Eureka是那种表皮坑坑洼洼，尾巴处长出来一块，切开能看见表皮较厚的，一般籽多（也有籽少、无籽的情况）；Lisbon是表皮较光滑，不是尾巴而是脑袋处尖出一个小尖，切开表皮较薄，籽少汁更多。 当我们不知道这是两个品种时，会以为“啊这次买的柠檬皮好厚呀！”“啊这几个🍋突出来的没那么多呀！”，其实是两种不同品种。 就像下面我查的资料写的，这两种味道没多差别，多用于做菜料理、风味调料、饮料、烘培等 好啦，下面让我们通过图片来看一下这两种的细微差别吧
这张很清楚，就是lisbon
lisbon
eureka
想知道更多的，也可以自己浏览我查的资料👇详述 Lemons: Most common everyday lemons are either Eurekas or Lisbons, though rarely does a market label their lemons as anything but “lemons.” A short neck at the stem end distinguishes Eureka lemons, whereas Lisbons have no distinct neck but the blossom end tapers to a pointed nipple. Eurekas may have a few seeds and a somewhat pitted skin, while Lisbons are commonly seedless with smoother skin. Both types have medium-thick skins and are abundantly juicy.Florida-grown lemons are likely to be Lisbon-type fruits called Bearss.
The Eureka and the Lisbon can be used to flavor both sweet and savory dishes. They can be used in sauces or as an accompaniment to fish and poultry. They can be used in baking and desserts, and their slices or wedges can be used as a garnish. The juice of the Eureka and Lisbon lemons can be used to tenderize meat, as a substitute for vinegar in dressings, and as a flavoring in drinks. The zest of the Eureka and Lisbon lemons—the yellow part of their peel—can used to add flavor when cooking and baking. The Eureka and Lisbon lemons are so similar in flavor, aroma and acidity that they sometimes are lumped together in marketing.
还有一种柠檬，Meyer柠檬：其实不是纯种柠檬，而是柠檬和一种橙子🍊或橘子的杂交品种。 表面颜色偏橘色，果肉颜色也会比eureka和lisbon深一些，皮很薄（摸的时候就能感觉到），籽少，甜度比上述两种高。确实在加州这边经常看到这种柠檬树。
这张普通🍋和Meyer lemon的对比，很明显，左边是meyer，右边是eureka
部分查阅资料： Meyer lemons: The Meyer lemon, named for Frank N. Meyer, who first imported the fruit from China in 1908, is a cross between a lemon and either an orange or a mandarin. Its orange-yellow flesh is sweeter than a lemon’s, and it has a thin, smooth skin. They can sometimes be found in specialty food stores, and are more widely available in California, where they’re the most popular variety for home growers. In the 1960s, they carried a virus that had the potential to damage other citrus crops, so their sale was restricted. A new virus-free strain has been developed, making them somewhat easier to find at farmers’ markets and produce stores.
But they do have their differences, and there are ways to tell them apart. The Eureka lemon is more knobby and thicker-skinned than the Lisbon. The Eureka has a short neck at the stem end. The Lisbon lemon is smoother and has a thinner skin than the Eureka. The stem end of the Lisbon does not have a neck, but the opposite end—the blossom end—tapers to a slight point. The Eureka contains some seeds while the Lisbon is usually seedless. The Eureka lemon contains a moderate amount of juice, and the Lisbon lemon contains more juice than the Eureka.
我今天烤柠檬片 用了两种柠檬，一种eureka，一种meyer。左边一点点是meyer，右边大部分是eureka
左边一点点是meyer，右边大部分是eureka。是不是能分出来啦？😋
meyer外表
这些都是meyer，因为皮薄、较软，不易切片
好啦柠檬介绍完毕。 查阅柠檬树来美国的历史已经百年以上，eureka已经150年，lisbon和Meyer100多年。 储存方法：eureka和lisbon放在塑料袋（最好是带网的）在冰箱可放达两周多时间，室温则一周多；meyer在冰箱可达一周时间，室温也一样。 Store ：Eureka and Lisbon lemons can be kept in a plastic bag in the refrigerator for up to 2 weeks. (The Meyer lemon will keep for 1 week.) Lemons stored at room temperature will keep for about 1 week. The juice and zest of lemons can be frozen.
下面介绍青柠Lime Tahiti limes: 超市最常见的青柠 Most of the limes in the supermarket are a Tahitian strain thought to have originated on that island. Tahiti limes come in two similar varieties: Persian limes, which are oval, egg-sized fruits cultivated in Florida, and a Bearss variety. The Bearss is a smaller, seedless California-grown lime. Both are greenish-yellow when fully mature, but are sold at their earlier, deep-green stage for better flavor.
Key Lime墨西哥青柠，皮不是特别硬，只是纯酸味和青柠特有的植物味。常见于key lime pie，jam等 Key limes (Mexican limes): These are smaller, rounder, and yellower than most limes, with a higher acid content. They are best known as an ingredient in Key lime pie. Though Key limes were once a commercial crop in Florida, these days the majority of these limes are grown outside the United States, and used mostly in juice or juice concentrate.
Limequats: 一种金桔和青柠的杂种，也有lemonquat（即和柠檬的杂种） A cross between limes and kumquats, limequats are small, round, and yellowish with an acidic lime flavor.
泰国青柠 Makrut limes: These round, bumpy-skinned limes have very little juice, and what juice they have is bitter. They are used in Southeast Asian cooking for their zest and especially their leaves, which have fragrant oils. Makrut limes are also known as kaffir limes, but this term is increasingly controversial. 一种在泰国常见的柠檬，比青柠大一点，外皮粗糙，凹凸不平，泰式青柠的皮，香气独特，但肉和汁都是苦的，刨出来的皮可用来制腌料或做咖哩酱，增添风味。 柠檬叶 (Kaffir Lime Leaves) （泰音：Bai Makrood） 泰式青柠除了皮，叶也是香味的源头之一，用手撕开，香气更浓，但不宜煮太久，除了煮咖哩煮汤，也可切丝，混在沙律和鱼饼之内，可晒干或急冻来用。 也有磨成粉的柠檬叶
Rangpur limes: 应该是柠檬和橘子的杂交，但是有种青柠特有的气味，属lime系列 Tart, acidic, and very juicy, these fruits resemble oranges or tangerines. They are most likely a cross between a lemon and a mandarin orange, but because they have a lime-like aroma, they have been dubbed limes.
好啦，柠檬和青柠的介绍就到这里。以后有机会再多研究citrus家族其他成员 介绍两个youtube视频，老爷爷奶奶讲的很有趣 https://youtu.be/5AbC02ij2gY https://youtu.be/1gwFQVvYVr4