
I liked the ume jam my student made so much that, knowing it wouldn't last very long, I decided to make some of my own. I couldn't find a recipe in English and the Japanese recipes and instructions I found online all varied quite a bit, which had me a bit confused. Normally I wouldn't worry so much because jam is a relatively simple thing to make, but ume (Japanese apricot, the fruit of Prunus mume) is bitter and toxic in its raw form and needs certain preparations to make it safe and tasty.
So I winged it, and what follows is not the ultimate ume jam recipe--this is more of a proto-recipe, and is in desperate need of refinement. But since the season's ume are nearly gone (and I'm out of jam jars and lids) it will have to do for this year. Hopefully my lovely readers will have some helpful tips and next year I'll get it right.
I used one kilogram of yellow ume and 500 grams of granulated sugar. I washed the ume and soaked it in salt water for three hours, then rinsed it, drained it and removed the stem remnants. Unlike with making umeshuI didn't have to worry about getting the ume completely dry.
The ume were added to my Le Crueset pot (any enamel, glass or stainless steel pot would work) and covered with cold water, then brought slowly to the boil.
The ume began to soften and the skin started to break as the water heated up, and as soon as it boiled the fruit was drained.
I had planned on giving the ume two boils but I realized that the fruit was so soft that another boil would have disintegrated them. So I decided they'd had enough and transfered them to a bowl to mash them (not wanting to damage my pot with the metal potato masher).
I gave the fruit a good mashing with a potato masher, which helped loosen the pits but didn't completely separate them. Ume are clingstones, so in this way they are closer to plums than apricots. Maybe I should check some plum jam recipes for tips about removing the pits.
Stuck as to how to proceed, I poured the ume into sieve and tried to push the pulp through with a wooden spoon. This helped separate the pulp from the pits, but what came out the other end was too smooth--I like a chunkier jam.
So for the rest of the pulp, I simply squeezed the flesh from the pits with my hands. Probably not the best way to do it, and it made quite a mess, but it did get the job done.
And here is the half chunky, half smooth pulp. It looked good already so I had a little taste, but it was unbelievably sour. Definitely a sour plum flavour, so I and understand a little why ume are often called plums in English.
The sugar was added and the heat turned on. I started out with 300 grams of sugar but after a taste ended up using the whole 500 gram bag. People who like a sweet jam would want to use more, maybe a full kilogram for a very sweet result.
I brought it slowly to a boil and then simmered it for 15 minutes, stirring constantly. 10 would probably have been sufficient but since I'd only given the ume one boiling I wanted to be extra careful.
It made a bit of foam, which was removed with a ladle. I got tired of that so in the end I just added a small pat of butter, which made the foam completely disappear.
Meanwhile, I had jars and lids boiling in two pots. They were all from home, having once contained strawberry, cherry and other jams made with my family on visits back home. The lids presented a bit of a conundrum, as I know you are not supposed to reuse them. But mason jars with double lids don't exist in Japan, and while jam making is popular here it's not done with long-term storage or safety in mind.
In fact, home-made jam in Japan is closer to what we'd call compote or refrigerator jam back home, with a soft, runny, ungelled texture. Little sugar is used (most Japanese have an aversion to overly sweet flavours), the cooking time is short, and the jam is poured into whatever containers are available, usually not sterilized. It kept in the fridge and meant to be eaten quickly. Very quickly--I've received a lot of home-made jam here in Japan, and it almost always goes moldy before I can finish it.
So I figured that compared to the usual Japanese jam-making methods, re-using my double lids was a minor sin. I only ended up with 5 jars and I'm sure it will be used up quickly.
Next time I go back home I will stock up not only on lids, but add a wide-mouth jam funnel as well. I had a bit of trouble ladling the jam into the jars and spilled a bit on the rims, which is another no-no. But after sealing the jars I heard five loud pings, confirming that all of the jars sealed.
And this is what I ended up with: 5 jars of beautifully coloured ume jam. It set perfectly-- ume must be very high in natural pectin. I'd never made jam without adding Certo and had always thought added pectin was necessary for all jam, so it was amazing to see this jam gell all by itself.
I just had to try some, so after the jam cooled down I spread a bit on an English muffin. And now I finally understand why ume are called Japanese apricots. The colour, smell and flavour were pure apricot! Well, a very tart apricot--maybe the offspring of an apricot and a lemon. The jam is delicious, and in addition to the apricot flavour it has a pleasant marmalade-like bitterness (I'm not sure that's the proper flavour or if it's a fault that resulted from only boiling the ume once). I just if only I could find proper jars and lids I'd be out buying more ume to make several more batches.
So I'll be trying this again next year, and also will try it with the ume leftover from my ume liqueur. And in the meantime I'd love to hear some ume jam making tips, or just some jam tips in general. What kind of jam are you making this year?

Recent Comments