In addition to what people have already suggested, a good Mexican cookbook should have plenty of recipes that call for these chiles specifically. I have Diana Kennedy's The Essential Cuisines of Mexico and there are tons of different dishes that call for the chiles you've named in a variety of different contexts (stews/soups, egg dishes, vegetable preparations, you name it). If you prefer to look for a book from a Mexican author, I suspect that the same will be true. (I will note that, to Kennedy's credit, she generally cites her sources - she gives the impression of being a person who collected recipes rather than an expert or inventor, at least in this book.)
Malaysian. Indonesian. Singaporean. Cajun. Persian. Caribbean. Moroccan.
Mexican. Diana Kennedy's Essential Cuisines of Mexico
Diana Kennedy is the OG of regional Mexican cuisines in English. The Essential Cuisines of Mexico
Great documentary about her 50+ years of roaming around Mexico collecting authentic recipes called Nothing Fancy
She even drove up 800 miles from her home in Mexico to donate her cookbook collection to the University of Texas San Antonio for their archive of Mexican cookbooks at age 96.
I haven't ordered from them myself, but the only decent Mexican restaurant in the UK- Mestizo- has opened their own market which sells their own fresh and frozen meals as well as a lot of very high quality more upscale brands. I find that the hardest part about teaching people in the UK how to make Mexican food is that they've never actually eaten any good Mexican food so they have no basis for comparison.
Sous Chef is an online upscale general foods grocer that carries a lot of higher end Mexican products.
Another upscale one is Cool Chile Company and they ship fresh house made tortillas out of London.
For buying bog standard stuff online, Mexgrocer is pretty good quality and reliable customer service. And they carry Herdez brand which I recommend.
Corn tortillas in the UK suck so would suggest getting a press and some masa and make them yourself. Also, invest in some Mexican Oregano and epazote.
Tex-Mex/Mexican uses a lot of dried chiles- which you can get basic bog standard at the many groceries. Sainsbury's stocks dried ancho and rocoto which are more of a South American thing. Waitrose also carries anchos and habaneros in their 'cooks ingredients' section. M&S also has some variety of dried chiles as well.
I would definitely recommend making your own chile powder as the blends in the UK tend to be far sweeter and have way more paprika than US/Tex-Mex varieties. I use the bulk cumin found in the Indian section rather than the crap in the 'spice' section.
For things like chile rellenos, its almost impossible to find fresh poblanos over here. The other missing ingredient is fresh tomatillos. You can kind of work around some recipes like enchiladas verdes using Luchitos tomatillo salsa or order canned online. For rellenos, large jalapenos can be used in a pinch.
If you are into gardening, would definitely recommend growing tomatillos and poblanos. Used to grow them at my pre-plague place of work in Surrey. There's also South Devon Chilli Farm but its seasonal availability only for ordering fresh.
As for recipes, Homesick Texan has authentic Tex-Mex and very reliable recipes. For true regional Mexican cuisine, invest in Diana Kennedy's Essential Cuisines of Mexico
I was recommended this, by Diana Kennedy Essential Cuisines of Mexico: Revised and Updated Throughout, with More Than 30 New Recipes: A Cookbook https://www.amazon.co.uk/dp/030758772X/ref=cm_sw_r_apan_glt_fabc_0F0HXJCSDPQAD3C9WJ7J
There's no pictures, and some of the text is quite dense. I won't lie, many of the recipes are less than ideal and called for ingredients that I couldn't find, but I started knowing very little about Mexican food and now I know... Well, slightly more. It's undoubtedly comprehensive though.
Diana Kennedy's Essential Cuisines of Mexico for regional Mexican.
For Tex-Mex, Lisa Fain's Homesick Texan
Texan-British chef who lives in the UK here and unfortunately outside of London I have never seen even remotely good Mexican or Tex-Mex. Wahaca is a pretty awful watered down for English people facsimile of Mexican food and ingredients can be difficult to come by. As u/Jstrangways said, Mexgrocer is a good source. But would definitely recommend Mestizo Market which is an offshoot of one of the only decent Mexican restaurants in London which has a wider variety of fresh ingredients.
So you're going to have to cook it yourself if you want to experience real Mexican. Diana Kennedy's Essential Cuisines of Mexico is the best source for authentic regional Mexican cuisine. For Tex-Mex, Lisa Fain's Homesick Texan cookbook and her blog are great resources. Arm yourself with a bag of masa harina, tomatillos, mexican oregano and dried chiles and then get into the kitchen.
Diana Kennedy's Essential Cuisines of Mexico
University of Texas @ San Antonio's Mexican Cookbook Collection
Pretty much anything written by Diana Kennedy
Depends on what you are going for. A great source for Tex-Mex is Lisa Fain's Homesick Texan. Lots of recipes on her site and her [cookbooks}(https://www.indiebound.org/book/9781401324261) are excellent.
The Dallas Style Brisket Tacos in particular are banging.
For all things salsa and related dips try r/salsasnobs.
Pro tip for guac, if your avocados are not perfectly ripe, add a bit of mayo.
For more traditional Mexican food, Diana Kennedy's The Essential Cuisines of Mexico is a huge book of her three most popular cookbooks.
A lot of the recipes are in Spanish, but the University of Texas San Antonio has a huge digital Mexican Cookbooks Collection.
Diana Kennedy's The Essential Cuisines of Mexico She has donated all of the cookbooks she collected over the course of her 50 years of travelling across Mexico to the University of Texas San Antonio Mexican Cookbook Collection- some of which is digitised
> Algo así como "America's test kitchen" dónde en teoría prueban varias opciones y te dan la mejor receta.
Eso se puede hacer cuando tienes una cocina tan pobre como la gringa, en el caso de México no es posible ya que no hay forma de comparar si el pozole de Oaxaca es mejor que el de Jalisco, ambos son deliciosos y es cuestión de gusto personal.
Ahora, este libro es considerado por muchos un *must* a la hora de hablar de cocina Mexicana
https://www.amazon.com/Essential-Cuisines-Mexico-Diana-Kennedy/dp/030758772X
La autora es una de las más respetadas expertas en la materia.
​