When we spent six weeks travelling in our campervan around Italy, France and Spain we started yearning for curry. There were plenty of interesting foods available, but the more exotic ones are based on the areas colonised by these countries and didn't include curry. I could carry jars of curry paste - I like Patak's, but don't want to carry heavy and breakable jars if I don't have to.
I bought some curry kits when I bought my last batch of urid lentils for my flour. They come as sachets of spices in a packet, and include all the recipe instructions and a shoppping list. Normally I would look at these and think, what an expensive way to buy a few spices, and what a lot of air - big boxes, little sachets. However, for travelling these might be perfect. The Bhaji Man packs come with a reasuring big label on the front saying gluten free. One might assume that spices don't have any gluten in but it is good to know that the packaging and processing of these spices hasn't contaminated them.
I made the aloo gobi - potato and cauliflower curry. The pack contained three sachets, which have to be added at different stages. One spices in one sachet needed crushing, so I rolled the sealed bag with a tin can - there is usually something solid available that would work.
The curry took longer to make that the recipe said, but I usually find potatoes take a long time on the stove. I served it with basmati rice, with a pinch of garam masala in the cooking water.
The curry was delicious. It didn't taste like the aloo gobi we eat in restaurants, but it would certainly beat those curry cravings. Not having to measure spices, not having to carry individual jars of everything I might need, make these little kits an excellent option. I suspect I would repackage the sachets and the instructions into a smaller bag to save space/